Crossword clue: an uninflected function word that serves to conjoin words or phrases or clauses or sentences

The most common answer is conjunctive (11 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

conjunctive 11 letters wn-def

an uninflected function word that serves to conjoin words or phrases or clauses or sentences

continuative 12 letters wn-def

an uninflected function word that serves to conjoin words or phrases or clauses or sentences