sondear

to sound, to probe (test with a probe); to plumb, to fathom (to measure something's depth); to sound out (to figure out someone's intent, mood, opinion or preference usually indirectly); to canvass (conduct a survey); to plumb, to explore (e.g. the depths of)

Etymology tree French sondebor. Spanish sonda Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō)bor. Latin -izō Latin -izāre Spanish -ear Spanish sondear From sonda + -ear.