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adj.
lacking in liveliness or animation; "he was so dull at parties"; "a dull political campaign"; "a large dull impassive man"; "dull days with nothing to do"; "how dull and dreary the world is"; "fell back into one of her dull moods"
adj.
so lacking in interest as to cause mental weariness; "a boring evening with uninteresting people"; "the deadening effect of some routine tasks"; "a dull play"; "his competent but dull performance"; "a ho-hum speaker who couldn't capture their attention"; "what an irksome task the writing of long letters is"- Edmund Burke; "tedious days on the train"; "the tiresome chirping of a cricket"- Mark Twain; "other people's dreams are dreadfully wearisome"
adj.
lacking in energy or will; "Much benevolence of the passive order may be traced to a disinclination to inflict pain upon oneself"- George Meredith
adj.
characterized by iniquity; wicked because it is believed to be a sin; "iniquitous deeds"; "he said it was sinful to wear lipstick"; "ungodly acts"
adj.
causing difficulty in breathing especially through lack of fresh air and presence of heat; "the choking June dust"; "the smothering soft voices"; "smothering heat"; "the room was suffocating--hot and airless"