incumbent (adjective) incumbent: obligatory
Sinonime: contrary, disadvantageous,
disturbing, ill-chosen, ill-timed, inappropriate,
inauspicious,
inconvenient, malapropos, mistimed,
troublesome, unfavorable,
unfortunate, unpropitious, unseasonable, unsuitable, untimely
Antonime: appropriate,
auspicious,
ok,
opportune,
suitable,
timely