Verbseoul.
ㅂ irregular (adj)

사납다 conjugation (sanapda, to be harsh, to be wild, to be ferocious)

To say to be harsh, to be wild, to be ferocious politely in the present tense, use 사나워요 (sah-nah-wuh-yoh) · sanawoyo. Below is the full conjugation of 사납다 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
사나워
sah-nah-wuh
sanawo
사나워요
sah-nah-wuh-yoh
sanawoyo
사납습니다
sah-nahp-sseum-nee-dah
sanapsseumnida
Past
사나웠어
sah-nah-wuh-ssuh
sanawosseo
사나웠어요
sah-nah-wuh-ssuh-yoh
sanawosseoyo
사나웠습니다
sah-nah-wuh-sseum-nee-dah
sanawosseumnida
Future
사나울 거야
sah-nah-ool guh-yah
sanaul geoya
사나울 거예요
sah-nah-ool guh-yae-yoh
sanaul geoyeyo
사나울 겁니다
sah-nah-ool guhm-nee-dah
sanaul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
사나우세요
sah-nah-oo-sae-yoh
sanauseyo
Suggestion / Let's Polite (요)
사나워요
sah-nah-wuh-yoh
sanawoyo
Question Polite (요)
사나워요?
sah-nah-wuh-yoh-?
sanawoyo?
Connective "and" — (고)
사납고
sah-nahp-goh
sanapgo
Conditional "if" — (면)
사나우면
sah-nah-oo-myuhn
sanaumyeon
Progressive (고 있어요)
사납고 있어요
sah-nahp-goh ee-ssuh-yoh
sanapgo isseoyo
Want to (고 싶어요)
사납고 싶어요
sah-nahp-goh shee-puh-yoh
sanapgo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
사나울 수 있어요
sah-nah-ool soo ee-ssuh-yoh
sanaul su isseoyo
Because / So (아/어서)
사나워서
sah-nah-wuh-suh
sanawoseo
Noun form — (기)
사납기
sah-nahp-gee
sanapgi
Noun form — (음)
사나움
sah-nah-oom
sanaum