Synonyms for While:

conj.

as long as (conjunction)
During, at the same time, although.
even though (conjunction)
Whereas, though.

n.

even as, meanwhile, During, concurrent, all the time, at the same time, simultaneous, together. the... the..., Than, compared with/to, relative, temporarily, briefly, for a short time, awhile, relatively, next to, by/in contrast, seen against something. big, correlative, coordinating conjunction, causal, Andor, space, assuming, And, conjunction. pain, elbow grease, distance, effort, delay, struggle, strain, exertion, striving, trouble, endeavor, chapter, work, countdown, block, day. trifle away, waste, industrious, fiddle away. although (noun)
Whereas, though, although.
spell (noun)
spell.
time (noun)
spell, piece.
time interval (noun)
spell, space.
while (noun)
spell, piece.

Other synonyms:

Whereas, striving, elbow grease, simultaneous, concurrent. together, struggle. exertion, endeavor, effort. strain. space. waste. pain. trouble. as
During.
mean time
meanwhile.
though
although.
Other relevant words:
fiddle away, temporarily, exertion, strain, chapter, During, relatively, meanwhile, although, causal, briefly, relative, struggle, elbow grease, though, trouble, striving, conjunction, Whereas, simultaneous, distance, together, endeavor, countdown, waste, And, big, Than, at the same time, awhile, industrious, correlative, block, work, effort, pain, assuming, trifle away, delay, space, concurrent, day.

Usage examples for while

  1. And while I am gone, just make yourself at home. – Shadow Mountain by Dane Coolidge
  2. He left it here the other day, while he and his wife went off on a trip, and he said I could use it whenever I wanted to. – Tom Swift and his Electric Runabout or, The Speediest Car on the Road by Victor Appleton
  3. I've business now, and must be excus'd, a while – The Works of Aphra Behn, Vol. I (of 6) by Aphra Behn