Synonyms for Meanwhile:

adv.

at the same time (adverb)
meantime, in the meantime, when, for now, till, Until, ad interim, in the interim, during the interval, up to, for the time being.
while (adverb)
for the time being, yet, meantime, up to, up until, till, in the course of, for now, During, all along, throughout, often, in the meantime, always.

adv

while (adverb)
for the time being, yet, meantime, up to, up until, till, in the course of, for now, During, all along, throughout, often, in the meantime, always.

n.

as, even as, concurrent, simultaneous, all the time, together, at the same time. variety, a world of difference, difference, divergence, contrast, distinction, variation, diversity, contradiction, collision. thenceforth, ever since, Thenceforward, for the meantime, henceforth, from that day/time/moment etc. forward, Since. during the interval, Until, while, in the interim, when, ad interim. mean time (noun)
during the interval, Until, while, in the interim, when, ad interim.

Other synonyms:

concurrent, thenceforth, simultaneous, while, as, Thenceforward, henceforth. together, when. Since. Other relevant words:
contrast, together, thenceforth, Thenceforward, as, Since, collision, diversity, divergence, henceforth, for the meantime, during the interval, concurrent, difference, simultaneous, variation, ad interim, when, distinction, in the interim, while, variety, all the time, contradiction, Until, at the same time.

Usage examples for meanwhile

  1. It would all take time, and meanwhile his business was bound to suffer. – Flowing Gold by Rex Beach
  2. Meanwhile we shall stay at the hotel with Mrs. Balcome." – Apron-Strings by Eleanor Gates
  3. And meanwhile they made much of her. – Delia Blanchflower by Mrs. Humphry Ward