Synonyms|156Antonyms|3|Broader|2Narrower|0Related|79
7
port
7
peephole(noun, opening)
7
skylight
6
keyhole(noun, opening)
5
pinhole(noun, opening)
5
window(noun, framework)
4
loophole(noun, opening)
4
hole(noun, break, opening, channel, passage)
4
opening(noun, break, channel, passage, vent)
4
pigeonhole(noun, opening)
2
casement
2
embrasure
2
eyelet
2
mousehole(noun, opening)
2
oriel(noun, bow, bay, aperture)
2
bay
2
companion
2
interface
2
larboard
2
outlet(noun, place, release, escape, opening)
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APASmart Define. (2015). porthole thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/porthole/thesaurus/synonyms
ChicagoSmart Define. 2015. "porthole thesaurus" https://smartdefine.org/porthole/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, porthole thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/porthole/thesaurus/synonyms>.
MLASmart Define. "porthole thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/porthole/thesaurus/synonyms>