Antontyms are word with opposite meaning. If stopped is the opposite of unstopped, then yes, they are antonyms
to do something intentionally is to do it on purpose, to mean to do it - for example 'I hurt you intentionally'
You can use "intentionally" in a sentence to describe an action that was done on purpose or with a specific goal in mind. For example, "She intentionally left her keys at home to avoid driving in rush hour traffic."
She intentionally ignored his calls to send a message.
He intentionally disobeyed his mother's command. I intentionally avoided Ted because he was a jerk.
She intentionally tore up the paper. He intentionally pushed the child so it would fall in the pool.
The word intentionally is an adverb. It means to do something in an intentional manner.
When a person's freedom is intentionally violated, it is called a violation of their rights or liberties. This can include actions such as imprisonment, forced labor, or restrictions on movement.
When workers intentionally reduce their productivity, it is called a slowdown.
Snubbing is intentionally ignoring someone in a social setting.
The question seemed to be intentionally pointed toward me.There is a question as to whether the current world-wide economic downturn was intentionally caused by some of the larger banking organizations.It sure looked like Tommy intentionally hit the nun with the kickball.
purposely, deliberately, willfully, in cold blood, designedly, and expressly are a few synonyms for Intentionally