strength

Synonyms: backbone body brawn brawniness brute force clout courage durability energy firmness force fortitude hardiness health healthiness lustiness might muscle nerve physique pith potency pow power powerhouse robustness security sinew sock soundness stability stableness stalwartness steadiness steamroller stoutness strong arm sturdiness substance tenacity toughness verdure vigor vim vitality zip

Antonyms: lack weakness

Synonyms: clout cogency concentration depth effectiveness efficacy energy extremity fervor force juice kick potency power resolution spirit vehemence vigor virtue

Antonyms: enervation lethargy weakness

Synonyms: anchor asset body burden connection core gist guts in intestinal fortitude license mainstay meat pith purport security sense strong point succor upper hand weight wire

Antonyms: disadvantage weakness