Of something that investigates or explores deeply.(adjective)
The action of investigating or exploring.(noun)
Present participle of probe.(verb)
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Use "probing" in a sentence
"For these are the laughable stereotypes he has tried to avoid his entire life, whether they come from the guy in the Giants jersey at the sports bar doing a limp wrist and a lisp or in a clever cartoon in which the word "probing" becomes overused code for gay sex."
"Aaron is still watching me, his expression probing."
"Spanish Prime Minister Jose Luis Zapatero urged Venezuelan authorities Wednesday to respond to Spain's call for help in probing allegations that Basque terrorists are trained in the South American Country."