Solution

PERFECTING

3 clues

Making flawless

Word class: Verb
Nature of clue: Description
Difficulty: Easy
Sources: Boatload Puzzles

Polishing

Word class: Verb
Nature of clue: Synonym
Difficulty: Easy
Sources: Boatload Puzzles

Other solutions to Polishing

Refining

Word class: Verb
Nature of clue: Synonym
Difficulty: Easy
Sources: Boatload Puzzles

Other solutions to Refining

HONING

Words are categorized by artificial intelligence: there can be mistakes.