1 : strong enough to withstand or overcome intellectual challenges or adversity; "the experiment yielded robust results"; "a robust faith"
2 : not soft or yielding to pressure; "a firm mattress"; "the snow was firm underfoot"; "solid ground"
3 : very difficult; severely testing stamina or resolution; "a rugged competitive examination"; "the rugged conditions of frontier life"; "the competition was tough"; "it's a tough life"; "it was a tough job"
4 : substantially made or constructed; "sturdy steel shelves"; "sturdy canvas"; "a tough all-weather fabric"; "some plastics are as tough as metal"
5 : having a strong healthy body; "an able seaman"; "every able-bodied young man served in the army"
adjectif
1 : sturdy and strong in form, constitution, or construction
