Curtest

5 clues
Most abrupt
Least prolix
Least polite
Least expansive
Maximally short
Similar answers:
Abruptest
Abtesting
Accuracy
Accurate
Accurately
Accuraterate
Accurrent
Accurse
Accursed
Accurst
Acesatest
Achievementtest
Acidtest
Acidtests
Acur
Acura
Acuracsx
Acuralegend
Acuramdx
Acuras