adjective, son·si·er, son·si·est. Scot. and North England, Irish English. 1.strong and healthy; robust.
2.agreeable; good-natured.
Origin: 1525–35; sonse prosperity, good fortune (
Middle English (
Scots) <
Scots Gaelic sonas, MIr
sonus, derivative of
sona prosperous, happy,
Old Irish son) +
-y1; cf.
donsie