be a slave to (something)

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be a slave to (something)

To be unduly influenced by or care too much about something; to spend too much or time or energy on something. Jeremy is a total slave to fashion. He can't leave the house without making sure every part of his outfit matches perfectly. I wish Sarah would relax a bit more over the weekend. She's a total slave to her job.
See also: slave

*slave to something

Fig. someone who is under the control of something; someone whose time or attention is controlled or "owned by" by something. (Fig. on being a slave to a person. *Typically: be ~; become ~.) Mary is a slave to her job. Bill is a slave to his drug addiction.
See also: slave
References in classic literature ?
While some declared that it sufficed for a slave to be beautiful, others, and Khacan was among the number, maintained that beauty alone was not enough, but that it must be accompanied by wit, wisdom, modesty, and, if possible, knowledge.
At length, early one morning, while Khacan was on his way to the king's palace, a dealer, throwing himself in his way, announced eagerly that a Persian merchant, arrived late the previous evening, had a slave to sell whose wit and wisdom were equal to her incomparable beauty.
Now it was not the custom to show a slave to a private bidder, but as no one dared to disobey the vizir his request was granted.