Full of strength or vigour; vigorous, powerful, strong; substantial. Now rare (chiefly Scottish in later use).

Physically lively, forcible, or brisk. rare.

Vigorous, lusty. archaic.

Full of, exhibiting, characterized by, vigour or active force; powerful, strong. Of immaterial things, qualities, etc.

Full of life; vigorous, active, or energetic on this account; lively or brisk. Of material things or substances, or their qualities.

Characterized by or exhibiting great spirit, vigour, or tension. Now chiefly: = highly strung adj. at highly, adv. compounds.

figurative. Tending to rise or keep up.