ambonym 

A word that is both a synonym and an antonym to another word.

It was first used in a thesis by Tiktok creator “etymologynerd,” and later was included in a video by Tiktok creator “human1011”

Robbery is an ambonym to steal

ambonym by mxhd August 1, 2023

Ambonym 

Coined by human1011 from TikTok, this word describes when two words are both synonyms AND antonyms.

From Latin “Ambi” meaning “both”.
From Greek “όνομα” meaning “word”.

“Robbery” and “steal” are ambonyms because during a bank robbery, stealing is occurring, but when buying something that is expensive, it is “daylight ROBBERY”, whilst buying something that is cheap would cause someone to say that it is a “STEAL”. Thus, steal – cheap – and robbery – expensive – are ambonymous.

Ambonym by Tizertiger August 1, 2023

Ambonym 

Words that are synonyms and antonyms, depending on which definitions you use.
Popularized by human.1011 on tiktok

Google Dictionary definitions

Robbery: 1) the action of taking property unlawfully from a person or place by force or threat of force.
2) unashamed swindling or overcharging.

Steal: 1) take (another person's property) without permission or legal right and without intending to return it.
2) a bargain.

the first definitions are synonyms, while the second definitions are antonyms. These words are ambonyms.

Ambonym by hmmmdudebro21 August 4, 2023