Less (adverb)

1. To a smaller extent or degree; not so much.
2. Used to form the comparative of adjectives and adverbs of one syllable.

Origin:

From middle english lesse, from old english lǣs, comparative of lǣssa ( “less” ), from proto-germanic *laisizô.

Examples:

1. I am less interested in politics than in economics.
2. This cake is less sweet than the other one.
3. She earns less money than her brother.
4. I try to spend less time on social media.
5. He speaks less fluently than his sister.