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book up - definition and synonyms

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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

phrasal verb
Word Forms
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present tense
I/you/we/theybook up
he/she/itbooks up
present participlebooking up
past tensebooked up
past participlebooked up
See also main entry: book

nanodegree

a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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dolt

a stupid person

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hypocaust

an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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