Verbseoul.
하다 verb
남장하다namjanghadato cross-dress (as a male person)

To say to cross-dress (as a male person) politely in the present tense, use 남장해요 (nahm-chahng-hae-yoh). Below is the full conjugation of 남장하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
남장해
nahm-chahng-hae
남장해요
nahm-chahng-hae-yoh
남장합니다
nahm-chahng-hahm-nee-dah
Past
남장했어
nahm-chahng-hae-ssuh
남장했어요
nahm-chahng-hae-ssuh-yoh
남장했습니다
nahm-chahng-hae-sseum-nee-dah
Future
남장할 거야
nahm-chahng-hahl- -guh-yah
남장할 거예요
nahm-chahng-hahl- -guh-yae-yoh
남장할 겁니다
nahm-chahng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
남장하세요
nahm-chahng-hah-sae-yoh
Suggestion / Let's Polite (요)
남장해요
nahm-chahng-hae-yoh
Question Polite (요)
남장해요?
nahm-chahng-hae-yoh-?
Connective “and” — (고)
남장하고
nahm-chahng-hah-goh
Conditional “if” — (면)
남장하면
nahm-chahng-hah-myuhn
Noun form — (기)
남장함
nahm-chahng-hahm