Look up expletive in Wiktionary, the free dictionary.

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