Verbseoul.
하다 verb (adj)
친하다chinhadato be close (intimate), familiar

To say to be close (intimate), familiar politely in the present tense, use 친해요 (cheen-hae-yoh). Below is the full conjugation of 친하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
친해
cheen-hae
친해요
cheen-hae-yoh
친합니다
cheen-hahm-nee-dah
Past
친했어
cheen-hae-ssuh
친했어요
cheen-hae-ssuh-yoh
친했습니다
cheen-hae-sseum-nee-dah
Future
친할 거야
cheen-hahl- -guh-yah
친할 거예요
cheen-hahl- -guh-yae-yoh
친할 겁니다
cheen-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
친하세요
cheen-hah-sae-yoh
Suggestion / Let's Polite (요)
친해요
cheen-hae-yoh
Question Polite (요)
친해요?
cheen-hae-yoh-?
Connective “and” — (고)
친하고
cheen-hah-goh
Conditional “if” — (면)
친하면
cheen-hah-myuhn
Noun form — (기)
친함
cheen-hahm