ostensibly
1. [ adverb ] from appearances alone
Synonyms: apparently seemingly on_the_face_of_it
Examples:

"irrigation often produces bumper crops from apparently desert land" "the child is seemingly healthy but the doctor is concerned" "had been ostensibly frank as to his purpose while really concealing it"-Thomas Hardy

Related terms: apparent apparent ostensible apparent ostensible
Similar spelling:   ostensible
  ostensive