He is addicted to his study.
Beau. *** Fl.

That part of mankind that addict their minds to speculations.
Adventurer.

His genius addicted him to the study of antiquity.
Fuller.

A man gross . . . and addicted to low company.
Macaulay.

The land about is exceedingly addicted to wood, but the coldness of the place hinders the growth.
Evelyn.

Syn. -- Addict, Devote, Consecrate, Dedicate. Addict was formerly used in a good sense; as, addicted to letters; but is now mostly employed in a bad sense or an indifferent one; as, addicted to vice; addicted to sensual indulgence. "Addicted to staying at home." J. S. Mill. Devote is always taken in a good sense, expressing habitual earnestness in the pursuit of some favorite object; as, devoted to science. Consecrate and dedicate express devotion of a higher kind, involving religious sentiment; as, consecrated to the service of the church; dedicated to God.