be a slave to/of something

be a slave of (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 of fashion. He can't leave the house without making sure every part of his outfit is perfect.See also: of, slave

be a slave to/of something

be a person whose life is completely controlled by something, for example a habit, a job, an interest, etc: She’s a slave to fashion; she’s always buying new clothes.See also: of, slave, something