'We work every day except Friday'. In this sentence 'except' is a/an— (49th Special BCS)

Parts of speech identification requires careful examination of how a word functions in its context. Sentence Analysis: "We work every day except Friday" — "except" comes before the noun "Friday" — It shows a relationship between "every day" and "Friday" — It means "excluding" or "apart from" Why "except" is a Preposition here: A preposition is a word placed before a noun or pronoun to show its relationship to another word. "Except" here precedes the noun "Friday" and shows exclusion from the group "every day." Meaning: We work every day, but Friday is excluded. "Except" as other parts of speech: — As a Conjunction: "He went to every class except [that] he missed the last one" (followed by a clause) — As a Verb (archaic/formal): "Present company excepted" (to exclude) More preposition examples with "except": — "Everyone was invited except me." — "She liked all fruits except mangoes." — "The office is open every day except Sunday." ✗ Adjective: Would modify a noun directly ✗ Noun: Would function as subject or object ✗ Pronoun: Would replace a noun Source: A Practical English Grammar — Thomson & Martinet; Longman English Grammar — L.G. Alexander.