strenuous
Translation
requiring great effort, tiring, energetic
Examples
It was a strenuous climb to the top.
It was a strenuous climb to the top.
He made strenuous efforts to improve his work.
He made strenuous efforts to improve his work.
Grammar Patterns
((strenuous)) + noun describing an activity or effort. It was a strenuous climb to the top.
Similar Words
Synonyms: arduous, difficult, tough; Antonyms: easy, effortless
Etymology
From Latin 'strenuus' meaning 'brisk, active, vigorous'.
Memory Tips
Think of 'strain on us' – something strenuous puts a physical or mental strain on us.