Verbseoul.
ㅂ irregular (adj)
이롭다iropdabeneficial, advantageous

To say beneficial, advantageous politely in the present tense, use 이로워요 (ee-roh-wuh-yoh). Below is the full conjugation of 이롭다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
이로워
ee-roh-wuh
이로워요
ee-roh-wuh-yoh
이롭습니다
ee-rohp-sseum-nee-dah
Past
이로웠어
ee-roh-wuh-ssuh
이로웠어요
ee-roh-wuh-ssuh-yoh
이로웠습니다
ee-roh-wuh-sseum-nee-dah
Future
이로울 거야
ee-roh-ool- -guh-yah
이로울 거예요
ee-roh-ool- -guh-yae-yoh
이로울 겁니다
ee-roh-ool- -guhm-nee-dah

Other useful forms

Command Polite (세요)
이로우세요
ee-roh-oo-sae-yoh
Suggestion / Let's Polite (요)
이로워요
ee-roh-wuh-yoh
Question Polite (요)
이로워요?
ee-roh-wuh-yoh-?
Connective “and” — (고)
이롭고
ee-rohp-goh
Conditional “if” — (면)
이로우면
ee-roh-oo-myuhn
Noun form — (기)
이로움
ee-roh-oom