noun

conditioner

hair conditioner, fabric softener, air conditioner

I use conditioner after shampooing my hair.

I use conditioner after shampooing my hair.

This fabric conditioner makes clothes feel soft.

This fabric softener makes clothes feel soft.

The air conditioner keeps the room cool.

The air conditioner keeps the room cool.

((conditioner)) a substance that improves the condition of something I use hair conditioner every day.

Synonyms: softener, treatment, balm

From the verb 'to condition' + '-er' (agent noun suffix). It's something that puts things in a good condition.

Think of it as a product that improves the 'condition' of something, like hair, fabric, or air.

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