When used to modify another word, everyday is written as a single word (“an everyday occurrence,” “ everyday clothes,” “ everyday life”). When you want to indicate that something …

Everyday is a common adjective, while every day is an adverbial phrase. Learn the difference between the two words.

(Definition of everyday from the Cambridge Academic Content Dictionary © Cambridge University Press)

You use everyday to describe something which happens or is used every day, or forms a regular and basic part of your life, so it is not especially interesting or unusual.

Everyday (as one word) is an adjective. Thesauruses list average, mundane, ordinary, and standard as synonyms. “Everyday clothing,” then, refers to the ordinary clothes you wear on …

1. of or pertaining to every day; daily: an everyday occurrence. 2. of or for ordinary days, as contrasted with Sundays, holidays, or special occasions: everyday clothes. 3. ordinary; …

When everyday is an adjective it means "used or seen daily" or "ordinary." You can tell it is an adjective because it always comes before the noun it describes. Below are some examples of …