Verbseoul.
하다 verb (adj)
달콤하다dalkomhadato be sweet

To say to be sweet politely in the present tense, use 달콤해요 (dahl-kohm-hae-yoh). Below is the full conjugation of 달콤하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
달콤해
dahl-kohm-hae
달콤해요
dahl-kohm-hae-yoh
달콤합니다
dahl-kohm-hahm-nee-dah
Past
달콤했어
dahl-kohm-hae-ssuh
달콤했어요
dahl-kohm-hae-ssuh-yoh
달콤했습니다
dahl-kohm-hae-sseum-nee-dah
Future
달콤할 거야
dahl-kohm-hahl- -guh-yah
달콤할 거예요
dahl-kohm-hahl- -guh-yae-yoh
달콤할 겁니다
dahl-kohm-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
달콤하세요
dahl-kohm-hah-sae-yoh
Suggestion / Let's Polite (요)
달콤해요
dahl-kohm-hae-yoh
Question Polite (요)
달콤해요?
dahl-kohm-hae-yoh-?
Connective “and” — (고)
달콤하고
dahl-kohm-hah-goh
Conditional “if” — (면)
달콤하면
dahl-kohm-hah-myuhn
Noun form — (기)
달콤함
dahl-kohm-hahm