There are many words to describe someone who always needs to be right, including indomitable, adamant, unrelenting, insistent, intransigent, obdurate, unshakeable, dictatorial.

To convey more an implication of getting angry when disagreed with, strident or truculent.

There are many words to describe someone who always needs to be right, including indomitable, adamant, unrelenting, insistent, intransigent, obdurate, unshakeable, dictatorial.

To convey more the sense of getting angry when disagreed with, strident or truculent - eager or quick to argue or fight; aggressively defiant, bad-tempered and always willing to argue with people: a truculent attitude.

There are many words to describe someone who always needs to be right, including indomitable, adamant, unrelenting, insistent, intransigent, obdurate, unshakeable, dictatorial.

To convey more the implication of getting angy when disagreed with, I'd go for strident.

There are many words to describe someone who always needs to be right, including indomitable, adamant, unrelenting, insistent, intransigent, obdurate, unshakeable, dictatorial.

To convey more an implication of getting angry when disagreed with, strident or truculent.