strenuous (a) (effort) | ardu (a) (effort) |
strenuous (a) (effort) | lourd (a) (effort) |
strenuous (a) (effort) | dur (m) (a) (effort) |
strenuous (a) (effort) | pénible (a) (effort) |
strenuous (a) (behavior) | énergique (a) (behavior) |
strenuous (a) (effort) | épuisant (a) (effort) |
strenuous (a) (effort) | laborieux (a) (effort) |
strenuous (a) (behavior) | zélé (a) (behavior) |