grueling

Plural: gruelings

Adjective Satellite

• characterized by effort to the point of exhaustion; especially physical effort
  • "a grueling campaign"

Adj

• Alternative spelling of gruelling.

Noun

• An extremely difficult or exhausting experience.
• Alternative spelling of gruelling.

Verb

• present participle and gerund of gruel

Examples

• The five-game Scrabble marathon was a GRUELING, but rewarding, challenge.

Synonyms

arduous, backbreaking, gruelling, hard, heavy, laborious, operose, punishing, toilsome

Anagrams of grueling