sondare bedeutet auf Englisch

canvass [canvassed, canvassing, canvasses]▼(to seek or solicit donations, information, opinions, support, etc.; to conduct a survey)
verb
[UK: ˈkæn.vəs] [US: ˈkæn.vəs]

cast [cast, cast, casting, casts]▼(to heave a lead and line in order to ascertain the depth of water)
verb
[UK: kɑːst] [US: ˈkæst]

explore [explored, exploring, explores]▼(to examine or investigate something systematically)
verb
[UK: ɪk.ˈsplɔː(r)] [US: ɪk.ˈsplɔːr]

oversee [oversaw, overseen, overseeing, oversees]▼(to survey, look at something in a wide angle)
verb
[UK: ˌəʊv.ə.ˈsiː] [US: ˌoʊv.ə.ˈsiː]

test the waters▼(explore or probe)
verb