Longman Dictionary of Contemporary English homepage

Language: Old English
Origin: -leas, from leas 'lacking, false'

-less

suffix
     
-less [in adjectives]
1 without something:
I felt powerless.
a childless couple
tasteless food
2XX not doing or using something:
You're too careless.
It's perfectly harmless.
3XX not possible to treat or affect in a particular way:
on countless occasions
She's tireless.

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