Verbseoul.
ㅂ irregular (adj)

무덥다 conjugation (mudeopda, hot)

To say hot politely in the present tense, use 무더워요 (moo-duh-wuh-yoh) · mudeowoyo. Below is the full conjugation of 무덥다 across the three tenses and three everyday speech levels.

Grammar note (ㅂ irregular (adj)): ㅂ-irregular adjectives follow the same rule as ㅂ-irregular verbs: the ㅂ changes to 우 when a vowel suffix follows. 덥다 (to be hot) becomes 더워요; 쉽다 (to be easy) becomes 쉬워요. The ㅂ is kept intact before consonant suffixes: 덥고, 쉽지. See all ㅂ-irregular verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
무더워
moo-duh-wuh
mudeowo
무더워요
moo-duh-wuh-yoh
mudeowoyo
무덥습니다
moo-duhp-sseum-nee-dah
mudeopsseumnida
Past
무더웠어
moo-duh-wuh-ssuh
mudeowosseo
무더웠어요
moo-duh-wuh-ssuh-yoh
mudeowosseoyo
무더웠습니다
moo-duh-wuh-sseum-nee-dah
mudeowosseumnida
Future
무더울 거야
moo-duh-ool guh-yah
mudeoul geoya
무더울 거예요
moo-duh-ool guh-yae-yoh
mudeoul geoyeyo
무더울 겁니다
moo-duh-ool guhm-nee-dah
mudeoul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
무더우세요
moo-duh-oo-sae-yoh
mudeouseyo
Suggestion / Let's Polite (요)
무더워요
moo-duh-wuh-yoh
mudeowoyo
Question Polite (요)
무더워요?
moo-duh-wuh-yoh-?
mudeowoyo?
Connective "and" — (고)
무덥고
moo-duhp-goh
mudeopgo
Conditional "if" — (면)
무더우면
moo-duh-oo-myuhn
mudeoumyeon
Progressive (고 있어요)
무덥고 있어요
moo-duhp-goh ee-ssuh-yoh
mudeopgo isseoyo
Want to (고 싶어요)
무덥고 싶어요
moo-duhp-goh shee-puh-yoh
mudeopgo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
무더울 수 있어요
moo-duh-ool soo ee-ssuh-yoh
mudeoul su isseoyo
Because / So (아/어서)
무더워서
moo-duh-wuh-suh
mudeowoseo
Noun form — (기)
무덥기
moo-duhp-gee
mudeopgi
Noun form — (음)
무더움
moo-duh-oom
mudeoum