This is the reading skill that pays off most over a Russian-learning lifetime. Faced with a long, unknown word, a beginner panics and reaches for a dictionary; a trained reader strips the affixes off and finds the root, then assembles the meaning from the root plus the prefix and suffixes. The word пере-пи́с-ыва-ни-е looks fearsome until you peel it: пере- ("re-") + -пис- ("write") + -ыва- (repeated/process) + -ние (makes a noun) = "rewriting." The complication that makes this a B2 skill rather than a beginner trick is that Russian roots change shape — their vowels and consonants alternate across a family — so you have to recognize a root through its disguises. This page teaches the strip-down procedure, the most useful root families and their alternations, and ends with a full worked decode.
The strip-down procedure
Take any unknown word and work from the outside in:
- Peel the ending (the grammatical tail: -е, -ый, -ть, -а...). That's grammar, not meaning.
- Peel the prefix if there is one (по-, пере-, за-, при-, etc. — see verb prefixes).
- Peel the suffixes (-ыва-, -ни-, -тель, -ость, -н-...).
- What's left is the root. Read the core meaning off it.
- Reassemble: root meaning, adjusted by the prefix, packaged by the suffix.
Перепи́сывание набело́ за́няло весь ве́чер.
Copying it out fair took the whole evening. (перепи́сывание → пере- + -пис- + -ыва- + -ние = 'the process of rewriting/copying out')
Подво́дное пла́вание тре́бует осо́бой подгото́вки.
Underwater swimming requires special training. (подво́дное → под- 'under' + -вод- 'water' + -н- adjective; пла́вание → -плав- 'swim' + -ние)
Root families and their alternations
The hard part is that one root wears several faces. The same meaning can surface with different vowels or consonants depending on the form. Learn the family as a set and you'll recognize any member.
| Root family | Meaning | Members seen in... |
|---|---|---|
| -ход- / -хож- / -шед- | go (on foot) | вход, прихо́д, прохо́жий, ушёл |
| -да- / -дава- / -даж- | give | дать, дава́ть, прода́жа |
| -вод- / -вож- / -вед- | lead | води́ть, вожа́тый, проводи́ть |
| -бер- / -бир- / -бор- | take / gather | беру́, собира́ть, сбо́рка |
| -став- / -стан- / -стой- | stand / put | поста́вить, ста́нция, стоя́ть |
The consonant swaps (д → ж, т → ч, з → ж, с → ш) are the same mutations you meet in conjugation, so they're not new — they're the familiar alternation showing up inside the root. Once you accept that -ход- and -хож- are the same root, прохо́жий ("a passer-by") decodes instantly as про- ("through/past") + -хож- ("go") + -ий = "one who goes past."
Все прохо́жие остана́вливались посмотре́ть на ули́чного музыка́нта.
Every passer-by stopped to look at the street musician. (прохо́жий = про- + -хож- 'go' + -ий; same root as ходи́ть)
Прода́жа кварти́ры заняла́ полго́да.
Selling the flat took six months. (прода́жа = про- + -да- 'give' (→ -даж-) + -а; 'a giving-away for money')
Vowel alternations inside the root
Beyond the consonant swaps, several roots alternate their vowel, and the alternation is rule-governed. The most famous pair is -бер- / -бир-: the root takes -и- when followed by the suffix -а-, and -е- otherwise. So бер-у́ ("I take") but со-бир-а́-ть ("to gather"). The same е/и dance appears in -дер-/-дир- (де́рну/выдира́ть), -тер-/-тир- (тере́ть/вытира́ть), -мер-/-мир- (уме́р/умира́ть).
A second family alternates between -лож- / -лаг- / -леж- ("lie / put"): по-лож-и́ть ("to put down"), пред-лаг-а́ть ("to propose, 'lay before'"), лежа́ть ("to lie"). Recognizing that all three are one idea — something being placed or lying — unlocks dozens of words.
Я собира́ю докуме́нты, что́бы пото́м их разобра́ть.
I'm gathering the documents to sort them out afterwards. (собира́ть has -бир- before -а-; разобра́ть has -бр-/-бор- — same root, alternating vowel)
Он предложи́л положи́ть де́ньги в банк.
He suggested putting the money in the bank. (предложи́ть = пред- + -лож-; положи́ть = по- + -лож- — same 'put' root)
A full worked decode
Take a word you might genuinely not know: перепи́сываться. Work the procedure.
| Step | Peel off | Leaves / means |
|---|---|---|
| -ся (reflexive), -ть (infinitive) | 'each other / mutual' + a verb |
| пере- ('across / back and forth') | exchange between two sides |
| -ыва- (repeated/imperfective) | an ongoing activity |
| -пис- ('write') | writing |
| пере- + -пис- + -ыва- + -ся | to write back and forth with each other = to correspond |
You never had to be taught the word "correspond." The parts told you: writing (-пис-), back and forth (пере-), as an ongoing activity (-ыва-), mutually (-ся). That is the whole power of the system — a word you've never seen yields its meaning to the procedure.
Мы перепи́сываемся с ней уже́ де́сять лет.
She and I have been corresponding for ten years now. (перепи́сываться = пере- + -пис- + -ыва- + -ся, decoded part by part)
Что́бы вы́учить язы́к, я начала́ перепи́сываться с носи́телем.
To learn the language, I started corresponding with a native speaker. (same decode: mutual, ongoing writing)
The distinguishing insight: roots in disguise
English speakers do recognize roots — write, writer, rewrite — but English roots stay fairly stable in shape. Russian roots morph: the very same root surfaces as -ход-, -хож-, and -шед- (идти́/ходи́ть's family even reaches ушёл), or as -бер-/-бир-/-бор-. The skill that separates an intermediate reader from an advanced one is learning to see through these disguises — to recognize that прода́жа, дать, and дава́ть all share the "give" root despite looking different. Treat each root family as one entry with several spellings, and a huge swath of vocabulary collapses into a few dozen recognizable cores.
Common Mistakes
❌ Peeling from the inside out — guessing the root before removing the prefix and ending.
Inefficient — strip the grammatical shell first (ending, then prefix, then suffix); the root is what's left.
✅ перепи́сывание → remove -е, пере-, -ыва-, -ни- → root -пис- 'write'.
Outside-in: ending, prefix, suffix, then root.
❌ Refusing to connect -ход- and -хож- because they 'look different'.
Wrong — they're one root; the д/ж swap is the same mutation as in conjugation (ходи́ть → хожу́).
✅ -ход-/-хож-/-шед- = one 'go' root: вход, прохо́жий, ушёл.
Recognize the family through its alternations.
❌ Treating собира́ть and беру́ as unrelated vocabulary.
Wrong — same root, -бер-/-бир-: -и- appears before the -а- suffix, -е- elsewhere.
✅ беру́ ↔ собира́ть ↔ сбо́рка — one 'take/gather' root, alternating vowel.
The vowel alternation is rule-governed, not random.
❌ Reading the prefix as part of the root, e.g. taking 'пере' as meaning of переписа́ть.
Wrong — пере- is a separable prefix ('re-/across'); the root is -пис-. Decode them separately.
✅ пере- (re-) + -пис- (write) = переписа́ть 'rewrite'.
Keep prefix and root as separate layers.
Key Takeaways
- To decode an unknown word, strip from the outside in: ending → prefix → suffix → root, then reassemble the meaning.
- Russian roots change shape across a family: -ход-/-хож-/-шед- ('go'), -да-/-дава-/-даж- ('give'), -вод-/-вож-/-вед- ('lead'), -бер-/-бир-/-бор- ('take'), -став-/-стан-/-стой- ('stand/put').
- Vowel alternations are rule-governed: -бер-/-бир- (-и- before -а-), -лож-/-лаг-/-леж- ('put/lie').
- The worked example: перепи́сываться = пере- ('back and forth') + -пис- ('write') + -ыва- (ongoing) + -ся (mutual) = to correspond.
- The advanced skill is recognizing a root through its disguises — treat each root family as one core idea with several spellings, and your vocabulary collapses into a few dozen recognizable roots.
Now practice Russian
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Start learning Russian→Related Topics
- How Russian Builds WordsB1 — Russian word formation (словообразова́ние) is famously systematic: a word is built from a prefix + root + suffix + ending (на-пис-а́-ть), so the root carries the core meaning and the affixes modify it predictably. One root spins out a whole family (учи́ть, учи́тель, учени́к, уче́бник, нау́ка), and the two main engines are prefixation (mostly on verbs) and suffixation (mostly on nouns and adjectives). Learn the parts and vocabulary turns from memorization into pattern-recognition.
- Verb Prefixes and Their MeaningsB1 — A catalogue of the common Russian verbal prefixes and what they mean — spatial ones (в- in, вы- out, под- up to, от- away, пере- across/re-, про- through, за- behind/begin, при- toward, у- away, до- up to, раз- apart, с- together/off) and Aktionsart ones that tweak how an action unfolds (за- start, по- a bit/awhile, пере- redo/overdo, недо- not enough, до- finish). One root (писа́ть) runs through them all, and a Russian prefix works much like an English phrasal-verb particle (write → write down, write out, rewrite).
- Noun Suffixes: Agents, Abstracts, and MoreB1 — Russian noun suffixes do two jobs at once: they tell you what kind of noun you're dealing with (a person who does X, an abstract quality, a place) and they fix its gender. -тель and -ник make masculine agent nouns (учи́тель, рабо́тник), -ость makes feminine abstracts (ра́дость, ско́рость), -ние and -ство make neuter abstracts (образова́ние, бога́тство). Because the suffix dictates the gender, recognizing it lets you both decode the meaning and decline the word correctly — two payoffs from one piece of the word.
- Forming Adjectives and AdverbsB2 — Russian builds adjectives from nouns and verbs with a small set of suffixes, and the suffix tells you the kind of adjective: -н-, -ск-, -ов- make relational adjectives (school-, Russian-, birch-); -лив-, -ист-, and especially -оват-/-еват- ('somewhat X-ish') make gradable qualitative ones; -им-/-ем- make '-able' adjectives. Almost any adjective then becomes an adverb by swapping its ending for -о (бы́стро) or, for -ский adjectives, the по-…-ски frame (по-ру́сски). The big habit to build is the relational adjective, because Russian uses one where English just stacks two nouns.