robust.

Able to withstand adverse conditions.

Evincing strength and health; strong; (often, especially) both large and healthy.

He was a robust man of six feet four.

robust health

Requiring strength or vigor.

robust employment

Sensible (of intellect etc.); straightforward, not given to or confused by uncertainty or subtlety.

robust findings

robust proof

Rough; rude.

Designed or evolved in such a way as to be resistant to total failure despite partial damage.

Resistant or impervious to failure regardless of user input or unexpected conditions.

Not greatly influenced by errors in assumptions about the distribution of sample errors.

Of an individual or skeletal element: strongly built; muscular; not gracile.