'clueless' definitions:

Definition of 'clueless'

From: WordNet
adjective
Totally uninformed about what is going on; not having even a clue from which to infer what is occurring

Definition of 'clueless'

From: GCIDE
  • clueless \clueless\ adj.
  • 1. not providing any clue. [PJC]
  • 2. completely uninformed or unaware; hopelessly ignorant; utterly bewildered. [PJC]