English adjective: strenuous | |||
1. | strenuous characterized by or performed with much energy or force | ||
Samples | Strenuous exercise. | ||
Similar | energetic | ||
Antonyms | lethargic, unenrgetic | ||
2. | strenuous taxing to the utmost; testing powers of endurance | ||
Samples | His final, straining burst of speed. A strenuous task. Your willingness after these six arduous days to remain here. | ||
Synonyms | arduous, straining | ||
Similar | effortful | ||
Antonyms | effortless | ||