spy, overhaul. [object is a topic] ask about, inquire about. scratch the head, slap the forehead. look into every hole and corner, peer into every hole and corner, pry into every hole and corner
nose
trace up
search out, hunt down, hunt out, fish out, ferret out
take up an inquiry, institute an inquiry, pursue an inquiry, follow up an inquiry, conduct an inquiry, carry on an inquiry, carry out an inquiry, prosecute an inquiry etc. n.
look at, look into
preexamine
discuss, canvass, agitate. [inquire into a topic] examine, study, consider, calculate
put the question, pop the question, propose the question, propound the question, moot the question, start the question, raise the question, stir the question, suggest the question, put forth the question, ventilate the question, grapple with the question, go into a question. [human object], question, put to the question, interrogate, pump
subject to interrogation, subject to examination
cross-question, cross-examine
press for an answer
give the third degree
put to the inquisition
dodge. catechize. require an answer
pick the brains of, suck the brains of
feel the pulse. get the lay of the land
see how the wind is blowing
put one's ear to the ground. be in question etc.adj.
? what, ? why, ? wherefore, ? whence, ? whither, ? where, ? how comes it, ? how happens it, ? how is it, ? what is the reason, ? what's the matter, ? what's in the wind, ? what on earth, ? when, ? who.?