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Cities and neighborhoods are constantly evolving. To describe an ongoing shift, trend, or trajectory in Farsi, you can use the phrase **رو به** (literally "facing" or "turning to").

### The Trajectory Formula

To state that something is heading in a specific direction, combine **رو به** with an abstract noun. If you use a simple present copula (like **است**), it indicates an ongoing, current trajectory.

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You can also pair this structure with the verb **رفتن** (to go). This emphasizes the active movement of the trend and is particularly useful for describing trajectories in the past or conditional futures.

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### Describing Revitalization and Growth

Once you know the formula, you can pair it with any abstract noun to discuss complex socio-economic shifts, such as urban renewal or gentrification. Notice how the nouns follow directly after **رو به**.

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### Stagnation and Decline

This structure works equally well for discussing periods of economic decline, stagnation, or disarray.

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As always, when using a verb of motion like **رفتن**, remember to conjugate it to match the subject and tense of your sentence.

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As neighborhoods transform, you can also use this construction to describe what is fading away or being left behind.

{{item:816703}}

Trends and trajectories (ru be)

adjective

adverb

conjunction

determiner

interjection

noun

numeral

particle

phrase

prefix

preposition

pronoun

sentence

suffix

verb

Singular pronouns and copula (man, -am)

Plural pronouns and copula (mâ, -im)

Subject pronoun omission

Singular demonstratives (in, ân)

Plural demonstratives (inhâ, ânhâ)

Independent copula (hastam, hast)

Negative present copula (nistam, nist)

Yes/No questions (âyâ)

Regular plurals (-hâ)

Animate plurals (-ân)

Indefiniteness (yek)

Indefinite marker (-i)

Describing nouns (-e / -ye)

Possession (-e / -ye)

Singular possessives (-am, -at, -ash)

Plural possessives (-emân, -etân, -eshân)

Basic prepositions (dar, be, az, bâ)

Spatial prepositions (ru-ye, zir-e...)

Numbers 1 to 10 (yek, do, se...)

Numbers and singular nouns

Numbers 11 to 20 (yâzdah, davâzdah...)

Counting by tens to 100

Telling time (sâ'at)

The verb to have (dâram)

Negative to have (nadâram)

Basic word order (SOV)

Infinitives and present stems (-an)

Present indicative (mi-)

Negative present indicative (nemi-)

Compound verbs

Question words (che, kojâ)

How many (chand)

The definite object marker (râ)

Object pronouns (man râ, to râ)

Singular commands (be-)

Formal and plural commands (be- ... -id)

Negative commands (na-)

The present subjunctive (be-)

The negative present subjunctive (na-)

Must (bâyad)

Might (shâyad)

Wanting to do something (khâstan)

Being able to do something (tavânestan)

Forming the past stem

The simple past of to be (budan)

The simple past tense

Negative simple past (na-)

Attached object pronouns on verbs (-am, -at, -ash)

Comparative adjectives (-tar)

Basic conjunctions (va, ammâ, yâ)

Giving reasons (chon)

Adverbs of frequency and degree (hamishe, hargez, kheyli, kam)

Everyday actions (kâr kardan, bâz kardan)

Non-human plural subjects

Indefinite pronouns (kasi, chizi, jâyi)

Negative indefinite pronouns (hich-kas, hich-chiz, hich-jâ)

Reciprocal pronouns (hamdigar, yekdigar)

Reflexive pronouns (khod-)

Reflexive direct objects (khod râ)

Emphatic pronouns (khod)

The quantifier every (har)

The quantifier all (hame)

The quantifier some (ba'zi)

Another and other (-i digar)

Which (kodâm)

How much (cheghadr)

Comparisons of equality (mesl-e)

Superlative adjectives (-tarin)

Irregular comparatives and superlatives

Ordinal numbers (-om)

Pre-nominal ordinal numbers (-omin)

Fractions and percentages

Prepositions of theme (dar mored-e)

Prepositions of time (ghabl az, ba'd az)

Preposition of exclusion (bedun-e)

Resultative conjunctions (banâbarin, pas)

Hortative construction (biyâ, biyâyid)

The present progressive tense (dâram mi-)

The past continuous tense (mi-)

Negative past continuous (ne-mi-)

Past continuous of to have (dâshtam)

The past progressive tense (dâshtam mi-)

The past participle (-e)

Present perfect tense (-e-am, -e-ast)

Negative present perfect (na-)

Question	Answer
facing / on the trajectory of	رو بهru be
dilapidation / decay	فرسودگیfarsudegi
These old buildings are heading towards dilapidation.	این ساختمان‌های قدیمی رو به فرسودگی است.in sâkhtemân-hâye ghadimi ro be farsudegi ast.
renovation / renewal (modernizing)	نوسازیnosâzi
That neighborhood was heading towards dilapidation before the renovation.	آن محله قبل از نوسازی رو به فرسودگی می‌رفت.ân mahalle ghabl az nowsâzi ro be farsudegi miraft.
progress / advancement (upward movement, promotion)	ترقیtaraqqi
With this project, the city is heading towards progress and renovation.	با این پروژه، شهر رو به ترقی و نوسازی است.bâ in porozhe, shahr ro be taraqqi va nosâzi ast.
gentrification	اعیان‌سازیa'yân-sâzi
Gentrification in this neighborhood is on the rise.	اعیان‌سازی در این محله رو به افزایش است.a'yânsâzi dar in mahalle ro be afzâyesh ast.
The area's population are leaving, because the neighborhood is heading towards gentrification.	جمعیت منطقه می‌روند، چون محله رو به اعیان‌سازی است.jam'iyyat-e mantaghe mi-ravand, chon mahalle ro be a'yân-sâzi ast.
stagnation / recession	رکودrokud
The housing market in this city is heading towards stagnation.	بازار مسکن در این شهر رو به رکود است.bâzâr maskan dar in shahr ro be rokud ast.
decline / downfall (fading, setting)	افولoful
Local shops are heading towards stagnation and decline.	مغازه‌های محلی رو به رکود و افول است.maghâze-hâye mahalli ro be rokud o oful ast.
transformation / alteration	دگرگونیdegarguni
The whole city is heading towards transformation.	کل شهر رو به دگرگونی است.kolle shahr ro be degarguni ast
disarray / turmoil	نابسامانیnâbesâmâni
We must invest in this street, otherwise the neighborhood will head towards disarray.	باید در این خیابان سرمایه‌گذاری کنیم، وگرنه محله رو به نابسامانی می‌رود.bâyad dar in khiyâbân sarmâyegozâri konim, vagarna mahalle ro be nâbesâmâni miravad.
During the war, the city's infrastructure was heading toward disarray.	در طول جنگ، زیرساخت شهر رو به نابسامانی می‌رفت.dar tule jang, zir-sâkht-e shahr ro be nâbesâmâni mi-raft.
oblivion / forgetfulness	فراموشیfarâmushi
The traditional culture of the neighborhood is heading toward oblivion.	فرهنگ سنتی محله رو به فراموشی است.farhang-e sonnati-ye mahalle ro be farâmushi ast.
Historic buildings are heading towards decline and oblivion.	بناهای تاریخی رو به افول و فراموشی است.banâhâ-ye târikhi-ye ru be oful o farâmushi ast.
We hope that this transformation heads towards progress.	امیدواریم که این دگرگونی رو به ترقی برود.omidvârim ke in degarguni ro be taraqqi beravad.