too soon

hasty ill-considered untimely

half-baked half-cocked inopportune jumping the gun overhasty precipitate previous

backward careful cautious delayed late mature overdue prepared slow

ahead of early inopportune overearly oversoon precipitate soon too early unfounded untimely unwarranted

current future later on time present timely well-timed

before before the appointed time beforehand early with time to spare

belatedly tardily

early precipitately rash