Verbseoul.
ㄹ stem

스며들다 conjugation (seumyeodeulda, to permeate, to percolate, to infiltrate)

To say to permeate, to percolate, to infiltrate politely in the present tense, use 스며들어요 (seu-myuh-deu-ruh-yoh) · seumyeodeureoyo. Below is the full conjugation of 스며들다 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
스며들어
seu-myuh-deu-ruh
seumyeodeureo
스며들어요
seu-myuh-deu-ruh-yoh
seumyeodeureoyo
스며듭니다
seu-myuh-deum-nee-dah
seumyeodeumnida
Past
스며들었어
seu-myuh-deu-ruh-ssuh
seumyeodeureosseo
스며들었어요
seu-myuh-deu-ruh-ssuh-yoh
seumyeodeureosseoyo
스며들었습니다
seu-myuh-deu-ruh-sseum-nee-dah
seumyeodeureosseumnida
Future
스며들 거야
seu-myuh-deul guh-yah
seumyeodeul geoya
스며들 거예요
seu-myuh-deul guh-yae-yoh
seumyeodeul geoyeyo
스며들 겁니다
seu-myuh-deul guhm-nee-dah
seumyeodeul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
스며드세요
seu-myuh-deu-sae-yoh
seumyeodeuseyo
Suggestion / Let's Polite (요)
스며들어요
seu-myuh-deu-ruh-yoh
seumyeodeureoyo
Question Polite (요)
스며들어요?
seu-myuh-deu-ruh-yoh-?
seumyeodeureoyo?
Connective "and" — (고)
스며들고
seu-myuh-deul-goh
seumyeodeulgo
Conditional "if" — (면)
스며들면
seu-myuh-deul-myuhn
seumyeodeulmyeon
Progressive (고 있어요)
스며들고 있어요
seu-myuh-deul-goh ee-ssuh-yoh
seumyeodeulgo isseoyo
Want to (고 싶어요)
스며들고 싶어요
seu-myuh-deul-goh shee-puh-yoh
seumyeodeulgo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
스며들 수 있어요
seu-myuh-deul soo ee-ssuh-yoh
seumyeodeul su isseoyo
Because / So (아/어서)
스며들어서
seu-myuh-deu-ruh-suh
seumyeodeureoseo
Noun form — (기)
스며들기
seu-myuh-deul-gee
seumyeodeulgi
Noun form — (음)
스며듦
seu-myuh-deum
seumyeodeum