Solution

LEVELING

2 clues

Flattening

Word class: Common noun
Nature of clue: Synonym
Difficulty: Easy
Sources: Boatload Puzzles
Topics: Building - Construction - Architecture

Other solutions to Flattening

Making even

Word class: Common noun
Nature of clue: Description
Difficulty: Easy
Sources: Boatload Puzzles
Topics: Building - Construction - Architecture

Other solutions to Making even

SMOOTHING

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