Solution

EXHAUSTING

2 clues

Draining

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

Other solutions to Draining

Tiring

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

Other solutions to Tiring

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