Intermediate (B1)
IPA: /dɪˈfɪnɪtɪvli/
KK: /dɪˈfɪnɪtɪvli/
Definition
In a way that is clear and certain, leaving no doubt about something.
Example
The committee decided definitively on the new policy after much discussion.
Conversation

Do you think we should make a choice definitively this weekend?

Absolutely! It's time to decide what we want to do for the trip.

I agree! We can't keep putting it off definitively anymore.

Exactly, let's sit down and finalize our plans.
Synonyms & Antonyms
Synonyms
decisively
conclusively
certainly
Antonyms
uncertainly
ambiguously
indecisively
Root Explanation
Definitively → It is formed from "definitus" (meaning defined or limited) and the suffix "-ly" (meaning in a manner). The word "definitively" means in a manner that is clearly defined or settled.
Memory Tip
Think of something that is 'clearly defined' — 'definitus' means defined, and '-ly' indicates the manner of doing something.
Visually Confused Words
indefinitively
infinitively
indefinitive
indefinitely
lenitively
nondefinitive
finitive
finitely