inquire

As a verb inquire is

(lb) to ask (about something).

As verbs the difference between inquire and gain

is that inquire is (lb) to ask (about something) while gain is to acquire possession of what one did not have before.

As a preposition gain is

(obsolete) against.

As an adjective gain is

(obsolete) straight, direct; near; short.

As an adverb gain is

(obsolete) straightly; quickly; by the nearest way or means.

As a noun gain is

the act of gaining or gain can be (architecture) a square or bevelled notch cut out of a girder, binding joist, or other timber which supports a floor beam, so as to receive the end of the floor beam.

As verbs the difference between inspect and inquire

is that inspect is to examine critically or carefully; especially, to search out problems or determine condition; to scrutinize while inquire is (lb) to ask (about something).

As verbs the difference between survey and inquire

is that survey is to inspect, or take a view of; to view with attention, as from a high place; to overlook; as, to stand on a hill, and survey the surrounding country while inquire is (lb) to ask (about something).

As a noun survey

is the act of surveying; a general view, as from above.

As verbs the difference between correct and inquire

is that correct is to make something that was not valid become right to remove error while inquire is (lb) to ask (about something).

As an adjective correct

is free from error; true; the state of having an affirmed truth.

Investigage is likely misspelled.

Investigage has no English definition.

As a verb inquire

is to ask (about something).

As verbs the difference between inquire and rejoin

is that inquire is to ask (about something) while rejoin is to join again; to unite after separation.

As verbs the difference between speculate and inquire

is that speculate is to think, meditate or reflect on a subject; to consider, to deliberate or cogitate while inquire is (lb) to ask (about something).