squabble
Squabble is an argument.
The siblings had a squabble over who got to use the computer first.
The answer would be to SQUABBLE
Argue and squabble are synonyms.
The words 'argue' and 'squabble' are synonyms.
One word that fits this definition is squabble.
squabble
To disagree angrily; squabble; wrangle. (in other words, to fight or disagree)
squabble
The siblings began to squabble over who got to ride in the front seat of the car.
A noisy quarrel about something trivial is a 'squabble'