Solution

HEIGHTEN

3 clues

Increase

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

Other solutions to Increase

Intensify

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

Other solutions to Intensify

Raise

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

Other solutions to Raise

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