proficiency

skill , craft , address , agility , dexterity , proficiency , ingenuity , adroitness , deftness , artfulness , workmanship , knack , expertness

courage , victory , violence , proficiency , domination , boldness

skill , dexterity , proficiency , power , sleight

performance , proficiency , efficiency

proficiency , specialty , specialization , speciality

• expertise, state of having expert skills; skillfulness, adeptness; masterfulness
• proficiency is the ability to do something well.

• increase knowledge, become expert at

• demonstrated capability, showed that he has skills and knowledge