IPA: /ˈlaɪtən/
KK: /ˈlaɪtən/
To become brighter or less heavy; to feel happier or more cheerful.
As the sun began to rise, the sky started to lighten.
Past: lightened
Past Participle: lightened
To make something less heavy or to reduce the severity or trouble of a situation.
She decided to lighten her load by leaving some items behind.
Past: lightened
Past Participle: lightened
Lighten → It is formed from "light" (from Old English *leoht*, meaning not heavy or bright) and "-en" (a suffix used to form verbs indicating to make or become). The word "lighten" means to make something less heavy or to become brighter.
Think of making something 'not heavy' ('light') — that's why lighten means to make something lighter or brighter.