simple past tense and past participle of practice
"The athlete practiced every day before the competition."
In plain English: To practice means to do something repeatedly so you get better at it.
"After years of training, she practiced her scales every morning before work."
having or showing knowledge and skill and aptitude
"adept in handicrafts"
"an adept juggler"
"an expert job"
"a good mechanic"
"a practiced marksman"
"a proficient engineer"
"a lesser-known but no less skillful composer"
"the effect was achieved by skillful retouching"
skillful, proficient, knowledgeable or expert as a result of practice
"After years of daily rehearsal, she was practiced at playing complex violin sonatas without missing a note."
In plain English: Practiced means someone has done something so many times that they are very skilled at it and do not make mistakes easily.
"She is an experienced and practiced speaker who never stumbles during her presentation."
Usage: Do not confuse this adjective with the past tense verb form practiced, which indicates an action rather than a state of being. Use "practiced" to describe someone who has gained expertise through repetition, such as a practiced surgeon or a well-practiced pianist.