Hydraulicly is an adverb meaning "in a hydraulic manner," or in other words, using or relating to the mechanics of water or other fluid in motion. Some synonyms for this word might include "fluidly," "fluidically," or "liquidity." Other synonyms might include "pneumatically," "mechanically," or "dynamically," which all suggest an emphasis on power or movement. Still other synonyms for hydraulicly might include "transmittingly," "conveyingly," or "propellingly," which all suggest a sense of force or energy moving through a system. Whatever the context, there are many different words that can capture the idea of hydraulic motion and mechanics.