ROGET THESAURUS
sound out
Experiment
VB
experiment, essay, try, try out, assay, make an experiment, make a trial of, give a trial to, put on trial, subject to trial, experiment upon, rehearse, put to the test, bring to the test, submit to the test, submit to the proof, prove, verify, test, touch, practice upon, try one's strength, road-test, test drive, take for a spin, test fly, grope, feel one's way, grope for one's way, fumble, t=atonner, aller =a t=atons, put out a feeler, throw out a feeler, send up a trial balloon, send up a pilot balloon, see how the land lies, get the lay of the land, test the waters, feel out,
sound out, take the pulse, see, check, check out, see how the wind blows, consult the barometer, feel the pulse, fish for, bob for, cast for, beat about for, angle, trawl, cast one's net, beat the bushes, try one's fortune, explore.