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um and ah

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verb [intransitive] mainly spoken British English pronunciation: um and ah 
Word Forms
present tense
I/you/we/theyum and ah
he/she/itums and ahs
present participleumming and ahing
past tenseummed and ahed
past participleummed and ahed

derived word

umming and ahing

noun [uncountable]

After some umming and ahing, we decided to move in together.

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