© 2026 Sloth Lingo. Learn easy. Lounge wisely.

filamentous

Intermediate (B1)

IPA: /ˌfɪl.əˈmɛn.təs/

KK: /ˌfɪl.əˈmen.təs/

adjective
Definition

Having the shape or appearance of thin threads or fibers.


Example

The filamentous structure of the algae made it difficult to see in the water.


Conversation
Sloth A
Have you seen that new plant in my living room?
Sloth B
Yes, it's really cool! What kind is it?
Sloth A
It's a type of fern, and its leaves are so filamentous.
Sloth B
That sounds interesting! I love plants with unique shapes.

Synonyms & Antonyms
Synonyms
threadlike
stringy
slender
Antonyms
thick
solid
bulky
Root Explanation

Filamentous → It is formed from "filament" (from Latin "filamentum", meaning a thread or fiber) and the suffix "-ous" (meaning full of or having the quality of). The word "filamentous" describes something that is full of or resembling threads or fibers.

Memory Tip

Think of 'filament' as a thread and remember that 'filamentous' means full of threads or fibers.

Visually Confused Words
unfilamentous
nonfilamentous
velamentous
ligamentous
interfilamentous
fibroligamentous
flammeous
Is this page helpful?