na-adjective, noun
Formal, somewhat literary term for being inferior or weak in quality, ability, or character. Rare in everyday conversation.
彼は自分の劣弱さを認めたくなかった。
He did not want to admit his own inferiority.
この材料の劣弱な点が問題になった。
The weak points of this material became an issue.
Compound of 劣 (inferior) and 弱 (weak). The exact historical derivation is uncertain, but the word follows standard Sino-Japanese word formation patterns.