" indecorous "

1: not appropriate for a particular occasion or situation;

  * e.g., " ... an indecorous joke for a solemn moment in the marriage ceremony "

•  Synonyms : 

•  amiss,

•  graceless,

•  improper,

•  inapposite,

•  inappropriate,

•  inapt,

•  incongruous,

•  incorrect,

•  inept,

•  infelicitous,

•  malapropos,

•  perverse,

•  unapt,

•  unbecoming,

•  unfit,

•  unhappy,

•  unseemly,

•  unsuitable,

•  untoward,

•  wrong

•  Antonyms : 

•  appropriate,

•  becoming,

•  befitting,

•  correct,

•  decorous,

•  felicitous,

•  fit,

•  fitting,

•  genteel,

•  happy,

•  meet,

•  proper,

•  right,

•  seemly,

•  suitable