expletive (n.)

• curse
• cuss
• duplication
• dysphemism
• ecphonesis
• ejaculation
• embellishment
• epithet
• excess
• exclamation
• extravagance
• fat
• featherbedding
• filler
• filling
• frill
• frippery
• gingerbread
• iterative
• luxury
• nonessential
• oath
• obscenity
• ornamentation
• outburst
• overlap
• padding
• pleonasm
• prolixity
• redundance
• redundancy
• spare
• superfluity
• swear
• swearword
• tautology
• verbosity