The story
From strap + -less. The noun sense is by analogy of strap-on.
Etymology from Wiktionary, CC BY-SA 4.0.
strapless
Today it means: Without a strap or straps; usually describing women's clothing without shoulder straps. Full definition →
Today it means: Without a strap or straps; usually describing women's clothing without shoulder straps. Full definition →
From strap + -less. The noun sense is by analogy of strap-on.
Etymology from Wiktionary, CC BY-SA 4.0.