主人に

to the master; to one's husband

→ 主人
phrase Rare #22,009
to the master; to one's husband 主人 can mean a master or owner, especially in older or formal contexts, and can also mean one's husband. The particle に marks the person toward whom an action or statement is directed.
JA: 主人に荷物を渡しました。
EN: I gave the luggage to the owner.

彼は主人によく仕えた

He served his master faithfully.

主人に聞かないどうして

Why do I have to ask my husband?

— 花様年華 (2000)

キムさんこの事は主人に内緒にしていい

Kim, is it okay if I keep this a secret from my husband?

— パラサイト 半地下の家族 (2019)

私は交通渋滞遅れた主人に説明した

I explained to my husband that I was late because of traffic.

主人に

My husband too.

— タイタニック (1997)

彼はその主人に仕えた

He served his master.