Solution

WATCHER

3 clues

Observer

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

Other solutions to Observer

Onlooker

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

Other solutions to Onlooker

Spectator

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

Other solutions to Spectator

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