This is the 1196th most frequent Japanese word.
聞か
"聞か" is the stem form of the verb "聞く," meaning "to hear," "to listen," or "to ask."
聞かせて is derived from the verb 聞く (to listen) and here it is used in the causative form meaning 'let (someone) listen'.
この曲を聞かせてください。
Please let me listen to this song.
聞かないで is the negative request form of the verb 聞く, instructing someone not to listen or pay attention.
私の話を聞かないでください。
Please don’t listen to my story.
聞かれる is the passive form of the verb 聞く, indicating being asked or heard by someone.