Providing aid or assistance; helpful or supportive in nature.
From Old French 'aidant,' the present participle of 'aidier' (to help), based on Latin 'adjutare'; literally meaning 'helping' or 'one who helps.'
English absorbed many present participle forms directly from French, which is why 'aidant,' 'servant,' and 'tenant' feel slightly foreign—they're actually French verb forms frozen in English.
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