adjective
1.
involving or occurring at an inappropriate or unexpected time
his wife's sudden return proved most unseasonable
Synonyms: ill-seasoned, ill-timed, inopportune, malapropos, mistimed, untimely
Related Word: deplorable, inappropriate, inconvenient, unsuitable; inauspicious, infelicitous, undesirable, unfavorable, unfortunate
Contrasted words: apropos, opportune, timely, well-timed
Antonyms: seasonable
2.
Synonyms: improper 1, ill-timed, inappropriate, inapt, inept, malapropos, unapt, unbecoming, undue, untimely