Present participle of recommend; suggesting or advising a course of action, person, or thing as suitable or beneficial. Endorsing something as worthy of acceptance or trial.
From Latin 're-' (again) and 'commendare' (to entrust, praise), meaning literally 'to praise again' or 'to entrust again.' The word entered English in the 14th century, emphasizing the act of vouching for something based on experience.
The 'again' prefix in recommend suggests that recommendations are essentially testimonials - you're repeating praise you've given before or passing along trust that was first placed in you. This makes every recommendation a small act of social bonding and reputation-sharing.
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