out ‧ do /aʊtˈduː/ BrE AmE verb ( past tense outdid /-ˈdɪd/, past participle outdone /-ˈdʌn/, third person singular outdoes /-ˈdʌz/) [transitive]
[ Word Family: verb : ↑ do , ↑ outdo , ↑ overdo , ↑ redo , ↑ undo ; noun : ↑ deed ≠ ↑ misdeed , ↑ do , ↑ doing ; adjective : ↑ done , ↑ overdone , ↑ undone ]
1 . to be better or more successful than someone else at doing something:
When it comes to speed of response, a small firm can outdo a big company.
outdo somebody in something
skaters trying to outdo each other in grace and speed
2 . not to be outdone in order not to let someone else do better or seem better than you:
Not to be outdone, other computer manufacturers are also donating machines to schools.