IPA: /ˌdɪs.pjuˈteɪ.ʃəs/
KK: /dɪsˈpjuːteɪʃəs/
Tending to argue or cause disagreements; often involved in debates or disputes.
His disputatious nature made it difficult for him to maintain friendships.
Disputatious is formed from "disputare" (meaning to argue or debate) and the suffix "-ious" (meaning full of or characterized by). The word describes someone who is full of arguments or inclined to dispute.
Think of someone who is 'full of' arguments ('-ious') and is always ready to 'debate' ('disputare'). This helps you remember that 'disputatious' refers to a person who loves to argue.