Free from burdens; without weight, responsibility, or difficulty.
From 'burden' plus the suffix '-less' (without), which is a productive Old English suffix used to create antonyms and negatives. Compare 'careless,' 'fearless,' 'homeless.'
Burdenless is beautifully symmetrical in English grammar—while 'burdenable' means 'able to be burdened,' 'burdenless' means 'unable to have burdens,' showing how opposite suffixes create opposite meanings!
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