Synonyms to make a sounding

fathom, absorb, answer, appraise, appreciate, apprehend, ascertain, assay, assess, assimilate, be acquainted with, be apprised of, be aware of, be cognizant of, be conscious of, be conversant with, be informed, be with one, bottom, calculate, calibrate, caliper, cast the lead, catch, catch on, check a parameter, clear up, cognize, comprehend, compute, conceive, conceptualize, crack, debug, decipher, decode, delve into, determine, dial, dig, dig into, digest, discern, disentangle, divide, divine, do, dope, dope out, estimate, evaluate, explain, explore, figure out, find out, find the answer, find the solution, follow, gauge, get, get hold of, get right, get the drift, get the idea, get the picture, go into, graduate, grasp, guess, guess right, have, have information about, have it, have it taped, have knowledge of, hit it, indagate, interpret, investigate, ken, know, learn, look into, make out, master, measure, mensurate, mete, meter, open the lock, pace, peer into, penetrate, perceive, pierce, plumb, plumb the depths, plumb-line, poke into, possess, prehend, prize, probe, pry into, psych, psych o