1. used when you are comparing two people, things, situations etc as ... as Tom's not as old as you, is he? an old woman with hair as white as snow. As well as something/somebody · Not (...) as such · Exercises · 日本語

as at meaning, definition, what is as at: on a particular date: Learn more.

as of meaning, definition, what is as of: on a particular date: Learn more.

a) used to say that one thing can happen or be true only if another thing happens or is true You can go out to play as long as you stay in the back yard.

a) in a way that makes it seem that something is true or that something is happening It sounds as though she's been really ill.

used to talk about something continuing for the amount of time that you want, need, or is possible. You can stay for as long as you want.

in addition to something or someone else They own a house in France as well as a villa in Spain.as well as doing something The organization gives help and ...

used when you are starting to talk about someone or something new that is connected with what you were talking about before.

if: You can have a dog as long as you promise to take care of it. (Definition of as long as from the Cambridge Academic Content Dictionary)

From Longman Dictionary of Contemporary Englishact as something phrasal verbDOto do a particular job for a short time, for example while the usual person is ...