the GNU version of the Collaborative International Dictionary of English
adj. Not liable to any exception or objection; unobjectionable; faultless; good; excellent.
The Century Dictionary and Cyclopedia
Not liable to any exception or objection; unobjectionable; faultless; hence, excellent; admirable.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. completely acceptable; not open to exception or reproach
Word Usage
"During the latter part of the term his conduct had not been by any means "unexceptionable"; but it was part of Gabrielle's queer policy of secrecy to hide any lapse on Arthur's part from her husband."