a versus i

Czech has two little words that both translate as English "and": a and i. They are not interchangeable. a is the colourless, default "and" that simply joins two things. i is the emphatic "and" — it means "and also," "and even," and it always adds a flavour of surprise or inclusion. Choosing the wrong one doesn't usually make a sentence wrong, but it makes it sound off: using i everywhere makes you sound theatrical, while using a where you mean "even" loses the whole point. This page sorts them out, then brings in ani…ani ("neither…nor"), the negative member of the family.

a — the neutral, everyday "and"

a is what you reach for nine times out of ten. It links two nouns, two adjectives, two verbs, or two whole clauses, with no extra meaning at all. It is the "and" of lists and of plain narration.

In přišel a sedl si, a chains two events in sequence — first one thing, then the next. This is the workhorse use: pure, unmarked connection. There is nothing surprising about either action, so plain a is exactly right.

The comma rule with a

A crucial habit: in simple addition, a takes no comma before it — chléb a sůl, not chléb, a sůl. This is the opposite of English, where a comma before "and" in a list (the Oxford comma) is optional but common. In Czech, a comma appears before a only when it joins clauses in an adversative ("but") sense, as in a přesto ("and yet"), or before a parenthetical. For the everyday joining sense, leave it out.

i — "and also," "even," "too"

i does something a cannot: it spotlights an addition as noteworthy. It means "and also," "even," or "as well," and it usually implies that what follows is unexpected, extreme, or the last thing you'd predict.

The plain version Přišel Petr just reports that Petr came. Přišel i Petr says: Petr came too — and you wouldn't have expected him to. The whole sentence pivots on that one word.

In umí i vařit, the i says: on top of everything else she can do, she can also cook. It frames cooking as a bonus skill, an extra. Swap in a (umí vařit a…) and you'd just be starting a flat list, losing all the admiration packed into i.

The most famous i of all is the dying line attributed to Caesar, which Czech borrows wholesale:

There is no way to render that betrayal with a. The shock lives entirely in i.

i…i — "both…and"

Doubled up, i…i brackets two items and means "both…and," stressing that the pair go together, often with a note of "yes, all of them." It is the positive counterpart of ani…ani.

Compare the plain Má čas a peníze ("He has time and money") — a flat statement. Má i čas, i peníze leans in: he has the one thing you'd expect to be missing and the other too. Punctuation works exactly as with ani…ani: no comma before the first i, but a comma before the second i (i čas, i peníze), because the second i opens a coordinated member. You will occasionally see it written without the comma in light, fixed pairs, but the comma is the recommended standard.

a vs i vs ani…ani — the full picture

The three forms map onto a neat grid. a is neutral-positive, i is emphatic-positive, and ani…ani is the negative "neither…nor."

Remember that Czech uses double negation: ani…ani requires the verb to also be negated. So "neither Petr nor Jana came" is Nepřišel ani Petr, ani Jana — literally "didn't-come neither Petr nor Jana." This feels wrong to English speakers, but it is obligatory in Czech.

For the full rules on this, see ani — neither…nor and multiple negation.

i as an intensifier: i kdyby

i also fuses with conjunctions to form "even if / even though" expressions. The commonest is i kdyby ("even if"), where i carries its "even" force into a hypothetical clause.

Here i raises the stakes of the condition: not just "if," but "even if," signalling that the outcome holds no matter what. Plain kdyby ("if") would lose that defiance.

Common mistakes

These are the transfer errors English speakers make most, since English flattens both Czech words into one "and."

Key takeaways

For where a and i sit among the other linking words, see the coordinating conjunctions overview. For the comparative "than," which is a different word again (než), see než — comparison and time.