強さ|つよさtsuyosa

1. nounstrength; power

• Synonym力ちからNeutralBroad word for force or ability, as in 「力を合わせる」; 「強さ」 narrows this to the degree of being strong.
• Synonym強度きょうどNeutralDegree of withstanding load or of intensity, as in 「耐震強度」; technical and often numeric, while 「強さ」 is the everyday word.
• Synonym勢いいきおいNeutralMomentum or drive, as in 「勢いがある」; stresses surging energy rather than the degree of strength that 「強さ」 measures.
• Antonym弱さよわさNeutralThe direct opposite of 「強さ」: weakness, or the degree of being weak.

Use 「強さ」 for the degree of being strong, as in 「心の強さ」 and 「風の強さ」. Choose 「力」 for force or ability, 「強度」 for technical load-bearing strength, 「勢い」 for momentum, and 「弱さ」 for the opposite.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 強つよいこと。その程度ていど。