A small or delicate piece of something that teases or agitates; a diminutive form indicating something slightly irritating or charming.
From Old French 'agacer' with the diminutive suffix '-ella,' creating a small or slight version of the quality of being vexing or charming.
The '-ella' ending (like in 'Cinderella') makes anything tiny and cute—even an 'agacella' sounds precious rather than purely annoying, showing how diminutives soften meaning.
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