English
trapless
From trap + -less.
Formed from trap + -less
Proto-Indo-European *drebʰ- ‘to step, trip, trample’
…
Proto-West Germanic *trappjan ‘to step’
Proto-West Germanic *trappjā ‘trap, snare’
Old English træppe ‘trap, snare’
Middle English trappe
English trap
Today it means
adj Without a trap (holding area in a pipe or pump).
Sources
Sources: Wiktionary, “trapless”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / trapless