noun
mouthwash
noun
1
A liquid used to rinse and freshen the mouth.
"He swished mouthwash after brushing his teeth."
How to Use Mouthwash
Learner’s notesIn plain EnglishA rinse used for oral hygiene.
Common pairings
rinse with mouthwash
antiseptic mouthwash
Word Forms
mouthwashed past tense, mouthwashes plural, mouthwashes singular
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He swished _____ after brushing his teeth.
Etymology
"Mouth" plus "wash" — a wash for the mouth.