keep in

verb (mainly adverb)
1.
(intransitive; also preposition) to stay indoors
2.
(transitive) to restrain (an emotion); repress
3.
(transitive) to detain (a schoolchild) after hours as a punishment
4.
(of a fire) to stay alight or to cause (a fire) to stay alight
5.
(transitive, prep) to allow a constant supply of: her prize money kept her in new clothes for a year
6.
keep in with, to maintain good relations with