overearly

immature incomplete untimely

a bit previous abortive early on embryonic forward green inopportune oversoon precipitate predeveloped previous raw soon unanticipated undeveloped unfledged unripe

backward careful cautious delayed late mature overdue prepared slow

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

current future later on time present timely well-timed

ill-timed improper premature undue unfortunate

a bit previous abortive anachronistic awkward badly timed bright and early disagreeable early early bird early on inauspicious inconvenient inexpedient inopportune intrusive malapropos mistimed out-of-date oversoon previous soon too early too late unfavorable unfit unlucky unpropitious unseasonable unseemly unsuitable unsuited wrong

appropriate good suitable

opportune timely