IPA: /ˈnʌnlaɪk/
KK: /nʌnlaɪk/
Similar to a nun or having qualities associated with a nun.
Her attire was nunlike, with modest clothing and a simple design.
Nunlike → The word is formed from "nun" (from Old English "nun", meaning a member of a religious community of women) and "-like" (meaning resembling or similar to). Thus, "nunlike" describes something that resembles or is similar to a nun.
Think of a 'nun' as a member of a religious community, and remember that 'nunlike' means resembling a nun.