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verb dumb pronunciation in British English /dʌm/ 
Word Forms
present tense
present participledumbing
past tensedumbed
past participledumbed

phrasal verb

dumb down

Word Forms
present tense
I/you/we/theydumb down
he/she/itdumbs down
present participledumbing down
past tensedumbed down
past participledumbed down

Open Dictionary

selfie stick

an expandable stick which you attach to a mobile phone or camera to help you take a selfie …

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