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verb smarten pronunciation in British English /ˈsmɑː(r)t(ə)n/ 
Word Forms
present tense
present participlesmartening
past tensesmartened
past participlesmartened

phrasal verb

smarten up

Word Forms
present tense
I/you/we/theysmarten up
he/she/itsmartens up
present participlesmartening up
past tensesmartened up
past participlesmartened up

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selfie stick

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

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