In accordance with the highest standards; faultlessly.
 everyone behaved impeccably
 she was impeccably dressed
 Example sentencesExamples
-  They had behaved impeccably.
 -  Both sketches are brilliantly conceived and impeccably performed.
 -  The pieces are impeccably made.
 -  The tiny apartment where they lived was always impeccably clean.
 -  The surface was impeccably polished.
 -  He made his name with impeccably crafted movies.
 -  He is impeccably dressed and always on time.
 -  Both operettas were impeccably cast and enchantingly sung.
 -  Our standards are impeccably high for everybody.
 -  He dressed impeccably in a suit and tie.