verb

discover (something) by guesswork or intuition.

mum had divined my state of mind

guess,surmise,conjecture,suspect,suppose,assume,presume,deduce,infer,work out,theorize,hypothesize,discern,intuit,perceive,recognize,see,realize,appreciate,understand,grasp,apprehend,comprehend,figure,figure out,latch on to,cotton on to,catch on to,tumble to,get,get the picture,twig,suss,savvy,cognize