Synonyms of expertness

1 Syllable
knack, skill, craft, gift, art
2 Syllables
prowess, know-how, savvy
3 Syllables
mastery, handiness, expertism, ableness, adeptness, mastership, adroitness, skillfulness
4 Syllables
facility, proficiency, expertise, proficiencies, facilities, masterliness, easygoingness, dexterity
5 Syllables
specialization, informality