IPA: /ˈdaʊtə/
KK: /ˈdaʊtər/
A person who is uncertain or skeptical about something.
She is a doubter when it comes to the effectiveness of the new policy.
To have uncertainty or lack of confidence about something.
She began to doubt her ability to finish the project on time.
Past: doubted
Past Participle: doubted
Doubter → It is formed from "doubt" (from Old French *douter*, meaning to fear or be uncertain) and "-er" (meaning a person who). A doubter is a person who expresses uncertainty or fear about something.
Think of someone who is 'uncertain' ('doubt') — the '-er' just means a person. A doubter is someone who questions or is unsure.