From Wiktionary, the free dictionary
From Middle Irish sonus (“good fortune, prosperity, happiness”), from Old Irish sona (“prosperous, fortunate, lucky”).
sonnys m (genitive singular sonney)
- good fortune, good luck, plentitude, felicity, luckiness; affluence, satiety
Note: Certain mutated forms of some words can never occur in standard Manx.
All possible mutated forms are displayed for convenience.