impressively is a form of:

Impressive



adjective
1.
(Tending to impress the mind striking) ដែលធ្វើអោយរំភើប, សម្បើម
Example: The fireman's impressive talk made the boys more careful with matches.
Example: His collection of painting is most impressive.
ENGLISH MEANING
adjective
1.
Capable of being impressed.
2.
Making, or tending to make, an impression; having power to impress; adapted to excite attention and feeling, to touch the sensibilities, or affect the conscience; as, an impressive discourse; an impressive scene.
1.
absorbing, affecting, arresting, august, beautiful, commanding dazzling, dramatic, eloquent, exciting, extraordinary, forceful, gorgeous, grand, grandiose, imposing, inspiring, magnificent, majestic, moving, notable, overpowering, profound, remarkable, solenoid, stirring, striking, sumptuous, superb, thrilling, touching
1.
commonplace, ordinary, regular, unimpressive