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adj.
marked by excessive confidence; "an arrogant and cocksure materialist"; "so overconfident and impudent as to speak to the queen"; "the less he knows the more positive he gets"
adj.
free from stress or conducive to mental ease; having or affording peace of mind; "was settled in a comfortable job, one for which he was well prepared"; "the comfortable thought that nothing could go wrong"; "was comfortable in his religious beliefs"; "she's a comfortable person to be with"; "she felt comfortable with her fiance's parents"