That you have an addiction to someone or something. It is said of an adept, of an unconditional follower, and taking a meaning from ancient Rome also a slave. This was because legally a free person could become a temporary addictus ("foreclosed slave, debtor") of another to settle an economic debt. Figuratively (and not so much anymore) you can be addicted to drugs, to love, to chocolate. . . The word originates from the Latin prefix ad ("alongside, towards") with the verb dicere ("to say, to indicate") and perhaps with the influence of dicare ("to dedicate, adjudicate").
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