Necessity: -malı/-meli ("must" / "should")

English spreads obligation across several modal verbs - “must,” “should,” “have to” - each with its own shade of strength. Turkish compresses most of that range into one suffix, -malı/-meli, glued directly onto the verb stem with no separate word needed.

What it does

-Malı/-meli turns a verb into “must [verb]” or “should [verb],” covering the obligation and advisability English keeps apart:

• Gitmeliyim. — I must go. / I should go.
• Erken kalkmalısın. — You should get up early.

Which English translation fits best - the hard “must” or the softer “should” - comes from context and tone, not from anything in the suffix itself. The same form carries both.

-Malı/-meli also has a second, unrelated job: marking a confident guess rather than an obligation, the same double duty English “must” pulls off in “it must be raining out there”:

• Saat beş olmalı. — It must be five o’clock. (a conclusion, not an order to anyone)
• Dışarıda biri var, kapı çalmalı. — There must be someone outside, the doorbell must be ringing.

Forming it

-Malı/-meli attaches straight to the verb stem, choosing between its two forms by the stem’s last vowel - a 2-way split, not the usual 4-way vowel harmony, since the suffix only ever surfaces as a or e. A full set of personal endings then follows, by person and by that same 2-way split:

For example: çalış- (“to work/study,” last vowel ı, back) gives çalışmalıyım (I must work) and çalışmalısın (you must work) — reading down the back-vowel column. Gel- (“to come,” last vowel e, front) gives gelmeliyim (I must come) and gelmelisin (you must come) — down the front-vowel column.

The suffix starts with the consonant -m-, so no buffer sound is ever needed, even after a vowel-final stem: oku- (“to read”) + -malı simply gives okumalı, with nothing inserted between them.

Negation

The negative marker -ma/-me slots in between the verb stem and the necessitative suffix itself - not after it:

• gel- + -me- + -meli + -yim → gelmemeliyim — I shouldn’t come.
• çalış- + -ma- + -malı + -sın → çalışmamalısın — you shouldn’t work.

Because the negative marker’s own vowel always matches the stem’s vowel class, it never clashes with the necessitative suffix that follows it - a back-vowel stem always pairs -ma- with -malı, and a front-vowel stem always pairs -me- with -meli.

Questions

The question particle mı/mi/mu/mü slides in between the necessitative suffix and the personal ending, the same way it does with most other predicate suffixes:

• Gitmeli miyim? — Should I go?
• Çalışmalı mısın? — Should you work?
• Gitmeli mi? — Should he/she go?
• Gitmeliler mi? — Should they go? (the particle follows the plural ending -ler, not the bare necessitative)

Exceptions worth knowing

The past form, -malıydı/-meliydi, usually implies hindsight - that the obligation was not met. Erken gelmeliydim. most naturally reads as “I should have come early” (and didn’t), much like English “should have,” rather than a neutral statement that the obligation was fulfilled. Context can push it the other way, but hindsight-regret is the default reading.

Third person needs nothing beyond the bare suffix. O gitmeli. (“He/she should go”) is a complete sentence - no personal ending is added for o, exactly as with the predicative “to be” endings.

The epistemic “must be true” sense never takes negation or a question the same way the obligation sense does in practice. You’ll see -malı/-meli turned into a guess constantly in statements (olmalı, “it must be”), but turning that specific reading into a question or a negative is rare enough in everyday speech that it’s not worth memorizing as a pattern yet - treat the inference use as a statement-only trick for now.

Examples

• Yarın erken kalkmalıyım. — I must get up early tomorrow.
• Bu ilacı yemekten önce almalısın. — You should take this medicine before eating.
• Öğrenciler ödevlerini zamanında teslim etmeli. — Students must submit their homework on time.
• Çok su içmeliyiz. — We should drink a lot of water.
• Sigara içmemelisin. — You shouldn’t smoke. (negative)
• Dün ona yardım etmeliydim ama unuttum. — I should have helped him yesterday, but I forgot. (past, hindsight)

Try it yourself

Babi, Speafy’s AI tutor, will have you build the same sentence three ways - plain necessity, negated, and the past “should have” version - until the person-ending pattern stops needing a conscious check, and Speafy’s FSRS-based flashcards bring back the “negative marker goes before the suffix, not after” rule just often enough that it never quietly slips.