ill-adapted

awkward banal clumsy dull flat gauche ill-fitted ill-suited improper inadept inapposite inappropriate incongruous inept inexperienced inexpert infelicitous insipid jejune maladroit malapropos slow stupid unable undexterous unfacile unfit unhandy unmeet unproficient unskilled unsuitable unsuited untimely

apt competent happy suitable suited

ill-equipped inadequate inappropriate unhealthy unlikely unsuitable unsuited useless

debilitated down dragging mistaken

below par can't make the grade decrepit discordant feeble flimsy ill-suited improper inapplicable incompatible incongruous incorrect ineffective inexpedient infelicitous inharmonious laid low not fit out of element out of place out of shape poorly rocky unbecoming uncongenial uncool unmeet unpromising valueless

appropriate proper suitable

able fit qualified willing