noncommittal

[ non-kuh-mit-l ]

/ ˌnɒn kəˈmɪt l /

not committing oneself, or not involving committal, to a particular view, course, or the like: The senator gave us a noncommittal answer.

Origin of noncommittal

An Americanism dating back to 1820–30; non- + committal

indefinite, vague, equivocal, evasive, guarded.

non·com·mit·tal·ly, adverb

According to the Taliban source, the Afghan was non-committal.

Al Qaeda Chief Ayman al-Zawahiri on Alert | |April 28, 2012 |DAILY BEAST
"This boat isn't for sale," said Betty in non-committal tones.

The Outdoor Girls in Florida |Laura Lee Hope
From the neighboring corner where Standish had stretched himself came a non-committal "Um."

Soldier Rigdale |Beulah Marie Dix
Her lids veiled them and her face assumed a look of non-committal interest.

The Vision of Elijah Berl |Frank Lewis Nason

The men, however, were non-committal and reassured their wives.

The Hidden Force |Louis Couperus
She is clever, because she has used this non-committal paper, which is in no way especial or individual.

The Man Who Fell Through the Earth |Carolyn Wells

noncommittal

/ (ˌnɒnkəˈmɪtəl) /

not involving or revealing commitment to any particular opinion or course of action a noncommittal reply

rare having no outstanding quality, meaning, etc