Solution

BRINK

3 clues

Edge

Word class: Common noun
Nature of clue: Synonym
Difficulty: Very easy
Sources: Boatload Puzzles

Other solutions to Edge

Threshold

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

Other solutions to Threshold

Verge

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

Other solutions to Verge

CUSP

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