Verbseoul.
ㄹ stem

늘다 conjugation (neulda, to increase)

To say to increase politely in the present tense, use 늘어요 (neu-ruh-yoh) · neureoyo. Below is the full conjugation of 늘다 across the three tenses and three everyday speech levels.

Grammar note (ㄹ stem): ㄹ-stem verbs end in ㄹ as the final consonant. They are conjugated regularly with vowel suffixes (살다 → 살아요), but the ㄹ drops before certain consonant suffixes — specifically before ㄴ, ㅂ, ㅅ, and before the formal ending 습니다: 살다 → 사는, 삽니다, 살지 (ㄹ kept before ㅈ). This is sometimes called a "ㄹ drop" or "ㄹ irregular." See all ㄹ-stem verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
늘어
neu-ruh
neureo
늘어요
neu-ruh-yoh
neureoyo
늡니다
neum-nee-dah
neumnida
Past
늘었어
neu-ruh-ssuh
neureosseo
늘었어요
neu-ruh-ssuh-yoh
neureosseoyo
늘었습니다
neu-ruh-sseum-nee-dah
neureosseumnida
Future
늘 거야
neul guh-yah
neul geoya
늘 거예요
neul guh-yae-yoh
neul geoyeyo
늘 겁니다
neul guhm-nee-dah
neul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
느세요
neu-sae-yoh
neuseyo
Suggestion / Let's Polite (요)
늘어요
neu-ruh-yoh
neureoyo
Question Polite (요)
늘어요?
neu-ruh-yoh-?
neureoyo?
Connective "and" — (고)
늘고
neul-goh
neulgo
Conditional "if" — (면)
늘면
neul-myuhn
neulmyeon
Progressive (고 있어요)
늘고 있어요
neul-goh ee-ssuh-yoh
neulgo isseoyo
Want to (고 싶어요)
늘고 싶어요
neul-goh shee-puh-yoh
neulgo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
늘 수 있어요
neul soo ee-ssuh-yoh
neul su isseoyo
Because / So (아/어서)
늘어서
neu-ruh-suh
neureoseo
Noun form — (기)
늘기
neul-gee
neulgi
Noun form — (음)
늚
neum