Solution

THWART

3 clues

Block

Word class: Verb
Nature of clue: Synonym
Difficulty: Very easy

Other solutions to Block

Foil

Word class: Verb
Nature of clue: Synonym
Difficulty: Easy

Prevent

Word class: Verb
Nature of clue: Synonym
Difficulty: Very easy

Other solutions to Prevent

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