Having the quality of flexibility without brittleness; yielding to force without breaking; capable of resisting great strain; as, the ligaments of animals are remarkably tough.
Not easily broken; able to endure hardship; firm; strong; as, tough sinews.
Not easily separated; viscous; clammy; tenacious; as, tough phlegm.
Stiff; rigid; not flexible; stubborn; as, a tough bow.
Life is tough, but it's tougher when you're stupid. John Wayne
Few things in the world are more powerful than a positive push. A smile. A world of optimism and hope. A 'you can do it' when things are tough. Richard M. DeVos
Approximately 80% of our air pollution stems from hydrocarbons released by vegetation, so let's not go overboard in setting and enforcing tough emission standards from man-made sources. Ronald Reagan
If you think your teacher is tough, wait until you get a boss. He doesn't have tenure. Bill Gates
You know, fame is a funny thing, man, especially, you know, actors, musicians, rappers, rock singers, it's kind of a lifestyle and it's easy to get caught up in it - you go to bars, you go to clubs, everyone's doing a certain thing... It's tough. Eminem