| robustious(adjective, strong, tough, fit, healthy) |
| robustuous(adjective, strong, tough, fit, healthy) |
| sapid |
| secure(verb, adjective, strong, sound, tough) |
| sprightly(adjective, strong, lively, active, vigorous) |
| stocky(adjective, person, body, strong, large) |
| thickset(adjective, person, body, strong, large) |
| well-knit |
| rude |
| aggressive(active, peppy, bouncing) |
| all right(expression, strong, tough, fit, fresh) |
| ambitious(dynamic, successful, driven) |
| austere(adjective, strong, hard, tough, sturdy) |
| bittersweet |
| deep(adjective, enthusiastic, vigorous, sincere, wholehearted) |
| dense(adjective, person, body, strong, hard) |
| determined(adjective, strong, hard, tough, solid) |
| eager(adjective, enthusiastic, vigorous, sincere, wholehearted) |
| effective(adjective, strong, hard, tough, sharp) |
| efficient(adjective, strong, tough, intense, energetic) |