Verbseoul.
르 irregular (adj)
목마르다mokmareudathirsty

To say thirsty politely in the present tense, use 목말라요 (mohng-mahl-rah-yoh). Below is the full conjugation of 목마르다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
목말라
mohng-mahl-rah
목말라요
mohng-mahl-rah-yoh
목마릅니다
mohng-mah-reum-nee-dah
Past
목말랐어
mohng-mahl-rah-ssuh
목말랐어요
mohng-mahl-rah-ssuh-yoh
목말랐습니다
mohng-mahl-rah-sseum-nee-dah
Future
목마를 거야
mohng-mah-reul- -guh-yah
목마를 거예요
mohng-mah-reul- -guh-yae-yoh
목마를 겁니다
mohng-mah-reul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
목마르세요
mohng-mah-reu-sae-yoh
Suggestion / Let's Polite (요)
목말라요
mohng-mahl-rah-yoh
Question Polite (요)
목말라요?
mohng-mahl-rah-yoh-?
Connective “and” — (고)
목마르고
mohng-mah-reu-goh
Conditional “if” — (면)
목마르면
mohng-mah-reu-myuhn
Noun form — (기)
목마름
mohng-mah-reum