noun
1.
Synonyms: reason 3, ground, proof, wherefore, why, whyfor
Related Word: basis, foundation; position, posture, stance, standpoint
2.
a vigorous often heated discussion of a moot question
their continuing argument over household expenses
Synonyms: contention, controversy, dispute, hurrah, rumpus
Related Word: argumentation, debate, disputation, polemic; disagreement, dissension, squabbling; embroilment, fuss, hassle, wrangle
3.
Synonyms: subject 2, head, matter, motif, motive, point, subject matter, text, theme, topic
Related Word: position, proposition, statement, thesis