Definition

In a way that is certain and without any doubt.

Example

She is undoubtedly the best player on the team.

Conversation

Do you think Sarah will win the competition?

Yeah, she’s been practicing a lot and is really talented.

I agree, and she’s undoubtedly the favorite this year.

For sure! Everyone knows how hard she’s worked to get here.

Synonyms & Antonyms

Root Explanation

Undoubtedly → It is formed from "un-" (meaning not) and "doubt" (from Old French *douter*, meaning to fear or be uncertain) and the suffix "-edly" (meaning in a manner). The word means in a manner that is not uncertain or without doubt.

Memory Tip

Think of 'not' ('un-') being combined with 'fear' or 'uncertainty' ('doubt') — this helps you remember that 'undoubtedly' means something is certain.

Visually Confused Words