booked up

comparative more booked up · superlative most booked up

1. slangWell-read on a particular topic.

   […] and we believe the day is usually the one on which the saint is supposed to have died; but this we cannot affirm, as we are not booked up in Roman sanctology.

   1875, Potter's American Monthly, volumes 4-5, page 359

2. slangboard gamesExtremely knowledgeable in a particular opening as a result of intensive study.

   Not only that, he managed to get the incredibly well-booked up US-Cuban star out of book on move 8, and then to give checkmate.

   2022 July 21, Colin McGourty, “Zagreb GCT 1: Firouzja leads as new chess era begins”, in Chess24

   1 more example

   This line is not by any stretch of the imagination considered a critical line, but it does take the players out of mainstream theory, where Giri typically is hardcore booked up.

   2022 March 11, Carsten Hansen, “2022 FIDE Grand Prix Belgrade Semifinals Day 2: Rapport Magic”, in Chess

1. participlepastsimple past and past participle of book up