► 名詞強さ  [(1)つよさ]    
meaning:  strength  rank: 2☆ 
彼の
武器は
精神力の強さだ ⇨ His weapon is his mental toughness
☆ 
彼等は
圧倒的な強さで
優勝した ⇨ They won the championship with dominating strength
More examples:- このマッサージ機は強さの調節が難しい ⇨ This massage machine is hard to adjust the strength
 - 彼には逆境を撥ね除ける強さが有った ⇨ He had mental strength to repel, fight off, adversities
 - 彼の粘り強さは脱帽物だ ⇨ I have to take my hat off for his tenacity