IPA: /ˈskɪlfəl/
KK: /ˈskɪl.fəl/
Having or showing skill; able to do something well.
She is a skillful musician who plays the piano beautifully.
Comparative: more skillful
Superlative: most skillful
Skillful → It is formed from "skill" (from Old Norse *skil*, meaning ability or knowledge) and "-ful" (meaning full of). The word "skillful" means full of skill or possessing great ability.
Think of having a lot of "ability" (skill) and being "full of" (the suffix -ful) that ability. This helps you remember that "skillful" means having great skill.