Verbseoul.
하다 verb (adj)
따분하다ttabunhadapitoyable, lamentable

To say pitoyable, lamentable politely in the present tense, use 따분해요 (ttah-boon-hae-yoh). Below is the full conjugation of 따분하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
따분해
ttah-boon-hae
따분해요
ttah-boon-hae-yoh
따분합니다
ttah-boon-hahm-nee-dah
Past
따분했어
ttah-boon-hae-ssuh
따분했어요
ttah-boon-hae-ssuh-yoh
따분했습니다
ttah-boon-hae-sseum-nee-dah
Future
따분할 거야
ttah-boon-hahl- -guh-yah
따분할 거예요
ttah-boon-hahl- -guh-yae-yoh
따분할 겁니다
ttah-boon-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
따분하세요
ttah-boon-hah-sae-yoh
Suggestion / Let's Polite (요)
따분해요
ttah-boon-hae-yoh
Question Polite (요)
따분해요?
ttah-boon-hae-yoh-?
Connective “and” — (고)
따분하고
ttah-boon-hah-goh
Conditional “if” — (면)
따분하면
ttah-boon-hah-myuhn
Noun form — (기)
따분함
ttah-boon-hahm