Expletive

Expletive may refer to:
 * Expletive (linguistics), a word or phrase that is not needed to express the basic meaning of the sentence
 * Expletive pronoun, a pronoun used as subject or other verb argument that is meaningless but syntactically required
 * Expletive attributive, a word that contributes nothing to meaning but suggests the strength of feeling of the speaker
 * Profanity or swear word, a word or expression that is strongly impolite or offensive