investigate Synonyms

enquire inquire look into treated treating try winnow look at kick around review sound out check out follow-up be after tested test survey scan scout scouting scrutinize search seek sifted sifting sift sound study studying surveying scrutinise vetted snoopiness underseek reconnoitering size up sleuthing delve into inquire into conduct research conduct a survey conduct an investigation conduct investigations carry out research troubleshoot seek out go after vetting check into check over