reef
Intermediate (B1)
IPA: /riːf/
KK: /rif/
noun
Definition
A ridge or chain of rocks, sand, or coral that is close to the surface of the water, often forming a habitat for marine life.
Example
The divers explored the colorful fish and corals around the reef.
Conversation
Have you ever gone snorkeling over a reef?
Yeah, it was amazing to see all the colorful fish!
I really want to explore a reef someday.
You should! It's such a beautiful experience.
Synonyms & Antonyms
Synonyms
ledge
bar
ridge
Antonyms
abyss
depth
void
transitive verb
Definition
To make a sail smaller by folding or rolling part of it up and securing it.
Example
The sailor had to reef the sail to prevent it from tearing in the strong wind.
Tense Forms
Past: reefed
Past Participle: reefed
Conversation
Did you see how they had to reef the sails during that last race?
Yeah, it was pretty intense!
I didn't think they would need to reef them so early in the day.
Root Explanation
The word 'reef' originates from Old English 'reof', meaning a ridge or a chain of rocks. It refers specifically to a submerged or partially submerged ridge of rock or coral in the sea.
Memory Tip
Think of a 'ridge' or 'chain of rocks' in the water when you hear 'reef' — it helps you remember that a reef is a structure found in the sea.
Visually Confused Words
ref
ree
reself
relief
redefy