-less

1.
an adjective suffix meaning “without” (childless; peerless), and in adjectives derived from verbs, indicating failure or inability to perform or be performed (resistless; tireless).
Origin
Middle English -les, Old English -lēas, special use of lēas free from, without, false; cognate with Old Norse lauss, German los, loose
British Dictionary definitions for -less

-less

suffix
1.
without; lacking: speechless
2.
not able to (do something) or not able to be (done, performed, etc): countless
Word Origin
Old English -lās, from lēas lacking
Word Origin and History for -less

word-forming element meaning "lacking, cannot be, does not," from Old English -leas, from leas "free (from), devoid (of), false, feigned," from Proto-Germanic *lausaz (cf. Dutch -loos, German -los "-less," Old Norse lauss "loose, free, vacant, dissolute," Middle Dutch los, German los "loose, free," Gothic laus "empty, vain"). Related to loose and lease.