Noun

• S: (n) probe, investigation (an inquiry into unfamiliar or questionable activities) "there was a congressional probe into the scandal"
• direct hyponym / full hyponym
• direct hypernym / inherited hypernym / sister term
• derivationally related form
• W: (v) probe [Related to: probe] (question or examine thoroughly and closely)
• W: (v) investigate [Related to: investigation] (conduct an inquiry or investigation of) "The district attorney's office investigated reports of possible irregularities"; "inquire into the disappearance of the rich old lady"
• S: (n) investigation, investigating (the work of inquiring into something thoroughly and systematically)