- Today's Word
Permeate
PUR-mee-ayt
Definition
- (verb) To spread throughout or penetrate every part of something.
Example
The scent of freshly baked bread permeated the entire house, making everyone’s mouth water.
Fun Fact
Permeation is a fundamental concept in science, from how water seeps through soil to how ideas spread through culture. The term is often used metaphorically—love can permeate a story, tension can permeate a room, and innovation can permeate an industry. Interestingly, in physics and chemistry, permeability describes how easily substances (like gases or liquids) move through materials, which is why certain fabrics “breathe” better than others!
(adjective) Noisy, unruly, and difficult to control; stubbornly resistant to restraint or discipline.
The obstreperous crowd refused to disperse despite three separate announcements, their noise and defiance rising with every attempt to restore order.
Obstreperous derives from the Latin obstreperus, meaning “clamorous” or “noisy,” built from ob- (“against”) and strepere (“to make a noise” or “to rattle”). The root strepere is also the ancestor of strep in streptococcus — both words carrying the sense of something loud and disruptive making itself impossible to ignore. It entered English in the early 17th century, immediately acquiring its dual sense of both physical noisiness and the kind of willful, uncontainable defiance that produces it.