mull over meaning, definition, English dictionary, synonym, see also 'mullah', mulled',mullet', Reverso dictionary, English simple definition, English vocabulary. verb~ To think about it, to examine/analyse in detail a proposal before making a decision, taking an action or direction. The verb mull means to think deeply about something, the way you might mull over your choice of what college to attend. Search mull over and thousands of other words in English Cobuild dictionary from Reverso. Consider how much you can afford to pay. Dictionary apps Browse our dictionary apps today and ensure you are never again lost for words. Or sign up in the traditional way. But Webster's defined it as "to work steadily without accomplishing much," which may connect it to earlier identical word in athletics sense of "to botch, muff" English-French English Definition English Synonyms. The verb mull means to think deeply about something, the way you might mull over your choice of what college to attend. If you contemplate an idea or subject, you think about it carefully for a long time. Synonyms of ' mull over '. See more synonyms on Thesaurus. Scrabble Words With Friends. Length Length ranks your synonyms based on character count.