Synonyms for Attain:

n.

be able to do something, bring off, manage, come together, pull off. hit on, overtake, run, push, start. attain (noun)
happen upon, come upon, chance upon, fall upon, achieve, light upon, gain, arrive at, accomplish, reach, chance on, strike, come across, make, HIT, discover.
win (noun)
study atachieve.

v.

achieve, accomplish (verb)
succeed, bring off, arrive, arrive at, reach, win, earn, pull off, fulfill, gain, HIT, acquire.
add (verb)
increment, add, accumulate, acquire, increase, sum, aggregate, tally, annex, augment, total, accrue.
arrive (verb)
debark, accomplish, arrive, land, come, enter.
motion (verb)
HIT, reach.
succeed (verb)
succeed, dominate, ascend, consummate, prevail, surmount, earn, triumph, fulfill, overcome, win, achieve.

Other synonyms:

come together, bring off, overtake. pull off, manage. push. run. arrive at
reach.
Other relevant words:
come together, chance on, come across, come upon, reach, happen upon, bring off, hit on, manage, fall upon, gain, run, HIT, overtake, push, chance upon, discover, arrive at, make, strike, light upon.

Usage examples for attain

  1. Such knowledge is too excellent for me; I cannot attain unto it." – The Vicar of Wrexhill by Mrs [Frances] Trollope
  2. To that all shall attain who die in Adam. – Twenty-Four Short Sermons On The Doctrine Of Universal Salvation by John Bovee Dods
  3. The wolf pack would surely overtake them before they could attain the protection of the cabin. – Bobby of the Labrador by Dillon Wallace