Definitions

1. adjective

having or showing a tendency to doubt or question the truth of something

“She approached the claim with a sceptical eye, questioning the motives behind it.”

2. noun

a person who doubts or questions the truth of something

“The sceptics in the room were not convinced by the evidence.”

3. adverb

in a sceptical manner

“He listened to the proposal sceptically, raising several points of concern.”