to visit someone casually and without an appointment
rendre visite à quelqu'un de manière informelle et sans rendez-vous (rendre visite à quelqu'un de manière informelle et sans rendez-vous)
"We decided to drop in on our cousins while passing through their town."
"Nous avons décidé de drop in on nos cousins en passant par leur ville." (nous avons decide de **drop in on** nos cousins en passant par leur ville)
to agree to join or support something officially
to quickly recover from a fearful or panicked state
to sketch a quick version of an idea
to accept a situation as it comes and deal with it calmly
to organize activities jointly across different areas or tea...
to improve or reach a higher standard or stage