1540s, "action of acquiring by effort, act of reaching by exertion," from French atteignement, from attaindre "to come up to, reach, attain, endeavor, strive" (see attain). Sense of "that which is attained, personal accomplishment" dates from 1670s.
the attainment of independence
his attainment of puberty was delayed by malnutrition
attachment
attack
attain
attainable
attainder
attainment
attar
attemper
attempt
attend
attendance