Also found in: Dictionary, Thesaurus, Legal, Wikipedia.
Related to mull over: collide with, allow for, fill up, get behind, Reapply, sort out
mull something over
to think about something; to ponder or worry about something. That's an interesting idea, but I'll have to mull it over. I'll mull over your suggestions and reply to you next week.
mull over somethingalso mull something over
to think carefully about something for a period of time She asked me what I thought about her idea, and I said I would have to mull it over. Bill mulled over the pros and cons of this job offer.
Ponder, think about, as in She mulled over the offer for some time and then turned it down. [Late 1800s]