aidless

From aid + -less.

aidless (comparative more aidless, superlative most aidless)

1. Without aid.
   • 1637, John Milton, Comus, London: Humphrey Robinson, p. 20,^[1]

     I found the place

     Where that dam’d wisard hid in slie-disguise

     (For so by certain signs I knew) had met

     Alreadie, ere my best speed could praevent

     The aidlesse innocent Ladie his wish’t prey,

   • 1842, Alfred, Lord Tennyson, “Morte d’Arthur”, in Poems‎^[2], volume 2, London: Moxon, page 6:

     It is not meet, Sir King, to leave thee thus, / Aidless, alone, and smitten through the helm.

2. Without mechanical assistance.

   Aidless navigation has the advantage of not requiring equipment, but is much less accurate.