Meaning

noun a liability account showing how much is owed for goods and services purchased on credit

adjective subject to or requiring payment especially as specified

originEtymology tree English pay Proto-Indo-European *-tḗr Proto-Indo-European *-dʰlom Proto-Indo-European *-dʰlis Proto-Italic *-ðlis Latin -bilis Latin -ābilis Old French -ablebor. Middle English -able English -able English payable From pay + -able.

Etymology from Wiktionary, CC BY-SA 3.0