Verbseoul.
하다 verb
기만하다gimanhadato deceive, to trick (usually with a condescending attitude)

To say to deceive, to trick (usually with a condescending attitude) politely in the present tense, use 기만해요 (gee-mahn-hae-yoh). Below is the full conjugation of 기만하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
기만해
gee-mahn-hae
기만해요
gee-mahn-hae-yoh
기만합니다
gee-mahn-hahm-nee-dah
Past
기만했어
gee-mahn-hae-ssuh
기만했어요
gee-mahn-hae-ssuh-yoh
기만했습니다
gee-mahn-hae-sseum-nee-dah
Future
기만할 거야
gee-mahn-hahl- -guh-yah
기만할 거예요
gee-mahn-hahl- -guh-yae-yoh
기만할 겁니다
gee-mahn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
기만하세요
gee-mahn-hah-sae-yoh
Suggestion / Let's Polite (요)
기만해요
gee-mahn-hae-yoh
Question Polite (요)
기만해요?
gee-mahn-hae-yoh-?
Connective “and” — (고)
기만하고
gee-mahn-hah-goh
Conditional “if” — (면)
기만하면
gee-mahn-hah-myuhn
Noun form — (기)
기만함
gee-mahn-hahm