Verbseoul.
하다 verb (adj)
사소하다sasohadato be trifling, of a trivial nature

To say to be trifling, of a trivial nature politely in the present tense, use 사소해요 (sah-soh-hae-yoh). Below is the full conjugation of 사소하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
사소해
sah-soh-hae
사소해요
sah-soh-hae-yoh
사소합니다
sah-soh-hahm-nee-dah
Past
사소했어
sah-soh-hae-ssuh
사소했어요
sah-soh-hae-ssuh-yoh
사소했습니다
sah-soh-hae-sseum-nee-dah
Future
사소할 거야
sah-soh-hahl- -guh-yah
사소할 거예요
sah-soh-hahl- -guh-yae-yoh
사소할 겁니다
sah-soh-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
사소하세요
sah-soh-hah-sae-yoh
Suggestion / Let's Polite (요)
사소해요
sah-soh-hae-yoh
Question Polite (요)
사소해요?
sah-soh-hae-yoh-?
Connective “and” — (고)
사소하고
sah-soh-hah-goh
Conditional “if” — (면)
사소하면
sah-soh-hah-myuhn
Noun form — (기)
사소함
sah-soh-hahm