weekdays

As a noun weekdays

is .

As an adverb weekdays

is on weekdays.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between weekdays and weekday

is that weekdays is plural of lang=en while weekday is any day of the week except Sunday and often also Saturday.

As an adverb weekdays

is on weekdays.

As nouns the difference between weekends and weekdays

is that weekends is plural of lang=en while weekdays is plural of lang=en.

As adverbs the difference between weekends and weekdays

is that weekends is at weekends while weekdays is on weekdays.

As a verb weekends

is third-person singular of weekend.

As nouns the difference between weekdays and weekend

is that weekdays is plural of lang=en while weekend is the break in the working week, usually two days including the traditional holy or sabbath day. Thus in western countries, Saturday and Sunday. Occasionally abbreviated to w/e.

As an adverb weekdays

is on weekdays.

As a verb weekend is

to spend the weekend.

As an adjective weekend is

of, relating to or for the weekend.