IPA: /ˈtɛlɪθɒn/
KK: /ˈtɛlɪˌθɒn/
A long television show that is organized to collect money for a charity or cause.
The telethon raised millions of dollars for disaster relief efforts.
Telethon → It is formed from "tele-" (from Greek "tēle", meaning far or at a distance) and "thon" (from Greek "thōn", meaning to run or to stretch). The word describes an event that runs or stretches over a distance to raise funds, typically through broadcasting.
Think of 'far' ('tele-') and 'running' ('thon') to remember that a telethon is an event that runs over a distance to raise money.
No commonly confused words.