The present participle of 'better,' describing the act of improving or making something superior in quality or condition.
From 'better' (verb) plus the '-ing' suffix, which creates the gerund/present participle form used for ongoing actions or as a noun.
The word 'bettering' became a philosophical cornerstone during the self-improvement movement of the 19th and 20th centuries, and it's still used in education and psychology to describe the continuous process of personal growth rather than reaching a final 'best' state.
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