not seemly; not in keeping with established standards of taste or proper form; unbecoming or indecorous in appearance, speech, conduct, etc.

an unseemly act; unseemly behavior.

inappropriate for time or place

an unseemly hour.

in an unseemly manner.

adjective

appropriate , due , fitting , proper , seemly , suited

adjective

cheap , coarse , crude , discreditable , disreputable , inappropriate , inapt , incorrect , indecent , indecorous , indelicate , inelegant , inept , in poor taste , malapropos , malodorous , out of keeping , out of place , poor , raffish , rough , rowdy , rude , ruffian , tawdry , unapt , unbecoming , unbefitting , undignified , ungodly , unrefined , unsuitable , untoward , vulgar , wrong , immodest , naughty , incongruous , unfit , boorish , distasteful , improper , offensive , solecistic , unseasonable