© 2026 Sloth Lingo. Learn easy. Lounge wisely.

threadfin

Intermediate (B1)

IPA: /ˈθrɛdˌfɪn/

KK: /θrɛdˌfɪn/

noun
Definition

A type of tropical fish known for its long, thin rays that extend from its pectoral fins.


Example

The threadfin swam gracefully through the coral reef, its fins trailing behind it.


Conversation
Sloth A
Have you ever tried fishing for threadfin?
Sloth B
No, I haven't. What are they like?
Sloth A
They're really fun to catch, and they taste great too!
Sloth B
Sounds awesome! I’d love to go fishing for threadfin sometime.

Synonyms & Antonyms
Synonyms
fish
fin
ray
Antonyms
mammal
reptile
amphibian
Root Explanation

Threadfin → The word is formed from "thread" (from Old English *þræd*, meaning a thin strand) and "fin" (from Old English *finn*, meaning a fin or wing). The term "threadfin" refers to a type of fish characterized by its long, thread-like fins.

Memory Tip

Think of a 'thin strand' ('thread') and a 'fin' ('fin') — together they describe a fish with long, thin fins.

Visually Confused Words
treading
unthreading
thrain
redfin
Is this page helpful?