a. [f. STEP sb. + -LESS.] Having no step or steps.

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1827.  G. Darley, Sylvia, 20. You might as well climb the stepless air and catch that voice … as overtake my Sylvia.

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1856.  Maitland Mercury, 16 Feb., 3/3.

          Desiring, aspiring—
To climb a stepless ladder up,
  And leaguing and ’triguing,
Until you taste some bitter cup.

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