1. What does it mean?
무물 shortens 무엇이든 물어봐 or 무엇이든 물어보세요. On social media it invites followers to submit questions, often for answers shared in a story or a follow-up post.
Also written or said as 무물보, mumul
2. The nuance
The invitation does not waive personal boundaries. Someone running a 무물 may skip private questions or limit the topic; it need not cover literally everything.
3. Examples
“주말에 여행 준비 주제로 무물 열어 볼까 해.”
I'm thinking of doing an ask-me-anything about travel prep this weekend.
“무물에 온 질문 중 자주 나온 것부터 답할게.”
I'll start with the questions that came up most often in the Q&A.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.