To mull is to ponder over or think about something for a long time.
To speculate is to hypothesize or come up with a theory about something but not a full tested or researched answer.
To ruminate is to think seriously or deeply about something.
To engage in meditation regarding (a religious mystery, for example).
The definition of contemplate is to look at something, think about something or meditate about something for a long time.
To bring blame or discredit:
To reflect or consider with thoroughness and care.
Find another word for mull-over. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for mull-over, like: think over, mull, speculate, ruminate, meditate, excogitate, chew-over, contemplate, muse, reflect and ponder.