1. to ask a question or request information about something
Usage: British English; American English typically uses 'inquire'
2. to investigate or look into a matter
Usage: British English; often used in formal or official contexts

Examples

• She enquired about the train schedule at the station.
• The police are enquiring into the cause of the accident.
• He enquired whether the restaurant had vegetarian options.
• I enquired after her health during our phone call.
• The committee will enquire into the matter next week.
• She enquired if anyone had seen her lost keys.