1823 W. Tully in T. Miner & W. Tully ii. i. 341 So theory-mad is Dr. Johnson, as to be very much dissatisfied with the deficiency of bleeding.
1915 P. Andreae 410 An aggregation of theory-mad individuals calling themselves philanthropists.
2012 D. Rothenberg v. 141 The theory-mad artist was considered too full of himself to be taken seriously.