as long as

as long as

1. Considering the fact that; seeing as; because. Hey, as long as you're going to the shop, would you mind picking me up a gallon of milk? I suppose I might as well do a bit of work on my thesis as long as I've got the apartment to myself.
2. If it is the case that; provided that. Hey, as long as you get your homework finished and handed in on time, I don't care what kind of music you listen to. OK, you can have one cookie before dinner as long as you don't spoil your appetite!
3. For the amount of time that (is stipulated). Run for as long as you are able, and then we can walk.
See also: long
Farlex Dictionary of Idioms.

as long as

 
1. and so long as since; because. As long as you're going to the bakery, please buy some fresh bread. So long as you're here, please stay for dinner.
2. and so long as if; only if. You may have dessert so long as you eat all your vegetables. You can go out this evening as long as you promise to be home by midnight.
3. for a specified length of time. You may stay out as long as you like. I didn't go to school as long as Bill did.
See also: long
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

as long as

1. For the period of time that, as in You may keep the book as long as you want, that is, keep it for whatever time you wish to. [Early 1400s]
2. Also, so long as. Since, because, as in Please pick up some milk as long as you are going to the store, or So long as you're here, you might as well stay for dinner.
3. Also, so long as; just so. Provided that, as in As long as you don't expect it by tomorrow, I'll make the drawing, or So long as sales are greater than returns, the company will make a profit, or You may have another cookie, just so you don't take the last one. [Early 1800s]
See also: long
The American Heritage® Dictionary of Idioms by Christine Ammer.

as/so ˈlong as

on condition that: As long as you tidy your room first, you can go out to play. I’ll lend you my car so long as you promise to take great care of it.
See also: long
Farlex Partner Idioms Dictionary
See also:
  • as/so long as
  • so long as
  • blaze
  • blazes
  • blazing
  • Why the long face?
  • sail right through something
  • sail through
  • sail through (something)
  • sail through something