Verbseoul.
하다 verb (adj)
귀하다gwihadaprecious, valuable

To say precious, valuable politely in the present tense, use 귀해요 (gwee-hae-yoh). Below is the full conjugation of 귀하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
귀해
gwee-hae
귀해요
gwee-hae-yoh
귀합니다
gwee-hahm-nee-dah
Past
귀했어
gwee-hae-ssuh
귀했어요
gwee-hae-ssuh-yoh
귀했습니다
gwee-hae-sseum-nee-dah
Future
귀할 거야
gwee-hahl- -guh-yah
귀할 거예요
gwee-hahl- -guh-yae-yoh
귀할 겁니다
gwee-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
귀하세요
gwee-hah-sae-yoh
Suggestion / Let's Polite (요)
귀해요
gwee-hae-yoh
Question Polite (요)
귀해요?
gwee-hae-yoh-?
Connective “and” — (고)
귀하고
gwee-hah-goh
Conditional “if” — (면)
귀하면
gwee-hah-myuhn
Noun form — (기)
귀함
gwee-hahm