启（qǐ）
Origin:

甲骨文的“启”是一只手把一扇门打开，本义是“开”，后来引申为“开始”“开导”“陈述”等意思。
As it appears on oracle bone inscriptions, “启” looks like a hand opening a door, so its original meaning was to open. Later, that definition expanded to include concepts of to start, to enlighten, and to state.

Meaning:
open; awaken; start

Words：

启发(qǐfā): to inspire; enlighten
开启(kāiqǐ): to open
启事(qǐshì): notice; announcement
启蒙(qǐméng): to enlighten (at the beginning)
难以启齿(nán yǐ qǐchǐ): unspeakable; difficult to speak one’s mind

Sentences:

1、Nǐ wèishénme bù gěi wǒ diǎnr qǐfā?
 你为什么不给我点儿启发？
Why don’t you enlighten me?

2、Nǐ zěnme bù tiē ge qǐshì shénmede.
你怎么不贴个启事什么的。
Why don’t you put up a notice or something?

原文链接