The phrase "impressive phrase" is correct and usable in written English
You can use it to describe a phrase that is striking or noteworthy in its expression or impact.
Example: "The speaker concluded with an impressive phrase that left the audience in awe."
Alternatives: "striking expression" or "remarkable statement."
Or perhaps just say it in your head, and skim-read some art theory so you can mouth more impressive phrases.
The way she handled the dramatic recitative before the aria was especially impressive; every phrase was delivered with a rich bloom that nearly masked the wily Queen's manipulations.
Although there has been a great deal of empty talk – particularly on the part of Mr Barroso –it is fashionable nowadays to use impressive-sounding phrases while continuing to pursue the same policies as before.
"Faded Neighborhood" sounds like classic country topped by a gospel chorus, with Lee's impressive pipes taking the phrase "Burlap swings, getting high" from Gina Winwood's demo to an insanely divine level.
Mr. Hvorostovsky's singing was, as throughout the evening, notable for its fluid Italianate phrasing and impressive breath control.
Ms. Krovytska's sound, though somewhat hard-edged, is earthy and alluring, and her control of Puccini's soft, high-lying phrases was impressive.
And the mad scene was a triumph, especially its reflective first half, "Col sorriso d'innocenza," in which Ms. Thomas's affinity for long-spun, slow melodic phrases was impressive.
The cellist Matthew Zalkind, who is studying with Timothy Eddy toward a master's degree at the Juilliard School, gave an elegant rendition of the work, playing with impressive refinement and eloquent phrasing.
During World War I this came to be known as "the conscription of wealth," a turn of phrase arguably as impressive as "death tax," in contemporary debates.
