Intermediate (B1)
IPA: /ˌkɒntrəˈvɜːʃəl/
KK: /kɒnˈtrəːvɜːrʃəl/
Definition
Causing a lot of disagreement or argument among people.
Example
The new law is very controversial and has sparked many debates.
Conversation

Did you hear about the new documentary?

Yeah, it's pretty controversial from what I've read.

I wonder what makes it so controversial though.

I think it challenges a lot of popular opinions, which always stirs up debate.
Synonyms & Antonyms
Synonyms
debatable
contentious
disputed
Antonyms
uncontroversial
accepted
settled
Root Explanation
Controversial → It is formed from "contra-" (meaning against) and "vertere" (meaning to turn). The word describes something that turns people against each other or leads to disagreement.
Memory Tip
Think of something that causes people to 'turn against' each other — 'contra-' means against, and 'vertere' means to turn.
Visually Confused Words
uncontroversial
precontroversial
noncontroversial
uncontroversially
conversional