Definition of buttoned-up in English:

buttoned-up

Syllabification: but·toned-up

Entry from US English dictionary

adjective

1Reserved and not inclined to reveal information: Fleischer’s buttoned-up style
2Secured to the maximum degree against attack: the tank had been buttoned up and had not been seriously damaged

Definition of buttoned-up in:

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Word of the day bimble
Pronunciation: ˈbɪmb(ə)l
verb
walk or travel at a leisurely pace