Definition of "unseemly"

An unseemly outbreak of temper.

1850, Nathaniel Hawthorne, chapter 10, in The Scarlet Letter, a Romance, Boston, Mass.: Ticknor, Reed, and Fields

Many men, women and children, clothed in bright raiment for the Sabbath, saw with a faint flicker of interest and surprise a very white man on a trishaw, and the driver pedalling with unseemly haste.

1958, Anthony Burgess, The Enemy in the Blanket (The Malayan Trilogy), published 1972, page 379

An all female race, the asari reproduce through a form of parthenogenesis. Each asari can attune her nervous system to that of another individual of any gender, and of any species, to reproduce. This capability has led to unseemly and inaccurate rumors about asari promiscuity.

2008, BioWare, Mass Effect (Science Fiction), Redwood City: Electronic Arts, PC, scene: Asari Codex entry

[I]n the 575 days since [Oscar] Pistorius shot dead his girlfriend Reeva Steenkamp, there has been an unseemly scramble to construct revisionist histories, to identify evidence beneath that placid exterior of a pugnacious, hair-trigger personality.

2014 October 21, Oliver Brown, “Oscar Pistorius jailed for five years – sport afforded no protection against his tragic fallibilities: Bladerunner's punishment for killing Reeva Steenkamp is but a frippery when set against the burden that her bereft parents, June and Barry, must carry ”, in The Daily Telegraph (Sport)‎