stop up

English · Thesaurus

AI In plain words

Writing a short explanation…

Written by a house AI from the entry below, in your language. The entry itself is the source.

stop up

verb stops up · stopping up · stopped up

To fill a hole or cavity, or block (an opening or passage), as with a plug. So then we […] scratched around and found an old tin washpan, and stopped up the holes as well as we could.
UK To permanently close or block (a road or path); to legally extinguish a right of way.
To increase the aperture of a photographic lens, moving from an f/stop represented by a higher number to an f/stop represented by a lower number and causing more light to pass into the camera. To stop down means to narrow the aperture; to stop up or open up means to expand it.

Opposite: stop down

Thesaurus

verb

Opposite: stop down

Talk about this word

Cite this

MLA

"stop up." Wiktionary, via Micwyn, micwyn.com/word/stop%20up. Accessed 6 Nov. 2026.

APA

stop up. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/stop%20up

Chicago

"stop up." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/stop%20up.

BibTeX

@misc{stop_up_2026,
  title = {stop up},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/stop%20up},
  urldate = {2026-11-06}
}