From naphach; a breathing out (of life), i.e. Expiring -- giving up.
see HEBREW naphach
H4646. mappach
[מַמָּח] noun [masculine] breathing out; — only construct נֶפֶשׁ מַמַּח Job 11:20 a breathing out of life = expiring (compare נפח 31:39; Jeremiah 15:9).