Filed from 1 published puzzle

FLOWING

Set once, to “Smooth” — The New York Times, Sunday, 5 September 1999.

7 letters

Other answers to these clues

CREAMY6 letters
EASE4 letters
EASY4 letters
EVEN4 letters
FACILE6 letters
FILE4 letters
FLUENT6 letters
GLASSY6 letters
GLIB4 letters
IRON4 letters
IRONOUT7 letters
PAVE4 letters