!familiar词根的派生词是familiarly,adv. 不拘礼节地亲密地精通地

He paused and nodded to me familiarly, while his bells jingled.他歇下手,亲热的向我点点头,帽上铃铛就丁零当啷响了。

One is known technically as kin selection, and familiarly as nepotism.