Solution

FORBID

3 clues

Ban

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

Other solutions to Ban

Disallow

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

Other solutions to Disallow

Prohibit

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

Other solutions to Prohibit

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