metier
[noun]
Synonyms: trade, art, calling, craft, handicraft, profession, vocation, forte, eminency, long suit, medium, oyster, strong suit

[TahlilGaran] English Synonym Dictionary ▲

met‧i‧er /ˈmetieɪ,ˈmeɪ- $ meˈtjeɪ,ˈmetjeɪ/ noun [countable usually singular]
[Date: 1700-1800; Language: French; Origin: métier, from Vulgar Latin misterium, from Latin ministerium 'work, ministry']
formal someone’s metier is the type of work or activity that they enjoy doing because they have a natural ability to do it well:
Acting is not my metier.

[TahlilGaran] Dictionary of Contemporary English ▲