made or having become thick | resistant to cutting or chewing |
made thick in consistency | physically toughened |
having calluses; having skin made tough and thick through wear | not given to gentleness or sentimentality |
| unfortunate or hard to bear |
| substantially made or constructed |
| feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad') |
| violent and lawless |
| very difficult; severely testing stamina or resolution |
| making great mental demands; hard to comprehend or solve or believe |