Meaning

adjective having or showing a tender and considerate and helpful nature; used especially of persons and their behavior

adjective agreeable, conducive to comfort

adjective tolerant and forgiving under provocation

originUncertain but probably of Proto-Brythonic origin. The name may be equivalent to Welsh cain (“elegant, fair”) or cant (“border, rim”) + dwfr (“water”).

Etymology from Wiktionary, CC BY-SA 3.0