to seek information by questioning; ask:to inquire about a person.
to make investigation (usually fol. by into):to inquire into the incident.
to seek to learn by asking:to inquire a person's name.
[Obs.]to question (a person).
inquire after, to ask about the state of health or condition of:Friends have been calling all morning to inquire after you.
Also, enquire.in•quir′a•ble,adj. in•quir′er,n.
Latin, as above
Old French enquerre
Latin inquīrere to seek for (see in-2, query); replacing Middle English enqueren
Middle English 1250–1300
1.See corresponding entry in Unabridged –3. investigate, examine, query. Inquire,ask,question imply that a person addresses another to obtain information. Ask is the general word:to ask what time it is.Inquire is more formal and implies asking about something specific:to inquire about a rumor.To question implies repetition and persistence in asking; it often applies to legal examination or investigation:to question the survivor of an accident.Sometimes it implies doubt:to question a figure, an account.