Definition of "all of"

all of

adverb
not comparable
1. Merely; only; no more or less than; neither more nor better than might be expected.
2. Entirely, completely, in a specified state.
  Quotations
  I was not there long, for I was all of a fright when I was there.
  1816, Thomas Bayly Howell, A Complete Collection of State Trials and Proceedings for High Treason and Other Crimes and Misdemeanors