pro·fi·cien·cy 
(prə-fĭshən-sē)
(prə-fĭshən-sē)n. pl. pro·fi·cien·cies
The state or quality of being proficient; competence.
- transfuser
- transfusible
- transfusion
- transfusional
- transfusive
- transgender
- transgendered
- transgene
- transgenesis
- transgenic
- transgenics
- transgress
- transgressible
- transgression
- transgressive
- transgressively
- transgressor
- tranship
- tranship
- transhumance
- transhumanism
- transhumant
- transience
- transiency
- transient