o·ver·con·fi·dent 
(ō′vər-kŏnfĭ-dənt)
(ō′vər-kŏnfĭ-dənt)adj.
Excessively confident; presumptuous.
o′ver·confi·dence n.
o′ver·confi·dent·ly adv.
- diphenylaminechloroarsine
- diphenylhydantoin
- diphenylketone
- diphosgene
- diphosphate
- diphosphoglyceric acid
- diphosphonate
- diphtheria
- diphtherial
- diphtheric
- diphtheritic
- diphthong
- diphthongal
- diphthongization
- diphthongize
- diphycercal
- diphycercy
- diphyletic
- diphyllous
- diphyodont
- dipl-
- dipl-
- diplegia
- diplex
- diplexer