Verbseoul.
하다 verb (adj)
뚱뚱하다ttungttunghadafat

To say fat politely in the present tense, use 뚱뚱해요 (ttoong-ttoong-hae-yoh). Below is the full conjugation of 뚱뚱하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
뚱뚱해
ttoong-ttoong-hae
뚱뚱해요
ttoong-ttoong-hae-yoh
뚱뚱합니다
ttoong-ttoong-hahm-nee-dah
Past
뚱뚱했어
ttoong-ttoong-hae-ssuh
뚱뚱했어요
ttoong-ttoong-hae-ssuh-yoh
뚱뚱했습니다
ttoong-ttoong-hae-sseum-nee-dah
Future
뚱뚱할 거야
ttoong-ttoong-hahl- -guh-yah
뚱뚱할 거예요
ttoong-ttoong-hahl- -guh-yae-yoh
뚱뚱할 겁니다
ttoong-ttoong-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
뚱뚱하세요
ttoong-ttoong-hah-sae-yoh
Suggestion / Let's Polite (요)
뚱뚱해요
ttoong-ttoong-hae-yoh
Question Polite (요)
뚱뚱해요?
ttoong-ttoong-hae-yoh-?
Connective “and” — (고)
뚱뚱하고
ttoong-ttoong-hah-goh
Conditional “if” — (면)
뚱뚱하면
ttoong-ttoong-hah-myuhn
Noun form — (기)
뚱뚱함
ttoong-ttoong-hahm