definitions

all of

1

The entire amount of something, as in The baby ate all of his cereal. This usage is relatively new, the word of being included only from about 1800 on.

2

No less than, at least, as in Although she looked much younger, she was all of seventy. [First half of 1800s]

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Nearby words

all in good time, all in one piece, all in, be, all joking aside, all kinds of, all of, all of a sudden, all of the above, all on, all one, all out
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

Examples from the Web for all of