in-group

n (usu derog 通常作贬义) group within an organization or in society that behaves in an exclusive way and gives favoured treatment to its own members; clique 小圈子, 自己人团体, 小集团（有排他性质、 对自己成员优予对待之组织或社团）.

in the way, in the way of, in the world, in this case, in time, in time (for sb. to do), in toto, in touch, in truth, in turn, in unison, in use, in vain, in view of, in vitro, in-, in- (also il-, im-, ir-), in- (also im-), in-built, in-flight, in-laws, in-patient, in-service, in-tray, in...case, in...circumstance, in/with relation to, inability, inability to, inaccessibility, inaccessible, inaccessibly, inaccuracy, inaccurate, inaccurately, inaction, inactive, inactivity, inadequacy, inadequate,