Solution

SIMPLY

3 clues

Just

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

Other solutions to Just

Merely

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

Other solutions to Merely

Plainly

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

Other solutions to Plainly

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