Able to be satisfied, pleased, or made content; capable of being appeased or contented.
From 'content' (to satisfy) plus the -able suffix, which means 'capable of being' or 'worthy of being.' The suffix comes from Latin -abilis.
The word 'contentable' is rare, but it's grammatically logical—if someone is 'teachable' (able to be taught), why not 'contentable' (able to be made content)? It reveals how flexible English word-building really is.
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