noun
ordinary man; commoner; man of humble position
Refers to a man of low social standing or an ordinary person without rank. Somewhat literary or old-fashioned; not a neutral modern word for 'commoner'.
彼は匹夫から身を起こして大臣になった。
He rose from being a commoner to become a minister.
noun
thoughtless man; man of little worth; person lacking wisdom
A derogatory or dismissive term for a man considered foolish, shallow, or worthless. Rare and literary; not used in everyday speech.
匹夫の浅はかな考えに惑わされるな。
Don't be misled by the shallow thinking of a foolish man.
The word 匹夫 is composed of 匹 (counter for small animals, implying low status) and 夫 (man). The exact historical derivation is uncertain, but the combination suggests a man of little account.