flatless

F4L1A1T1L1E1S1S1

adjective

Without a flat.

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Meanings

adjectiveflatless (comparative more flatless, superlative most flatless)

comparative more flatless · superlative most flatless

  1. Without a flat.
  2. That will not deflate, without flatness.

    In 1979, a California company began manufacturing a flatless polyurethane tire for wheelchairs.

    1991, Malcolm Abrams, Harriet Bernstein, More Future Stuff: Over 250 Inventions that Will Change Your Life by 2001

Origin

From flat + -less.

Full word history & related roots →
Cite this entry
APA

flatless. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/flatless

MLA

“flatless.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/flatless. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “flatless,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/flatless.

Source: flatless on Wiktionary, CC BY-SA 4.0.