stag·ger·ing 
(stăgər-ĭng)
(stăgər-ĭng)adj.
Causing great astonishment, amazement, or dismay; overwhelming: a staggering achievement; a staggering defeat.
stagger·ing·ly adv.
- powerful
- powerfully
- powerfulness
- powerhouse
- power kite
- powerless
- powerlessly
- powerlessness
- powerlifting
- power mower
- power of appointment
- power of attorney
- power pack
- power plant
- power play
- power politics
- power series
- power shovel
- power station
- power steering
- powers that be
- power strip
- power structure
- power takeoff
- power train