Here are some synonyms for "intentional":
* Deliberate
* Purposeful
* Designed
* Calculated
* Premeditated
* On purpose
* Willful
Here are some examples of how "intentional" can be used:
* "Her injuries were intentional, not accidental."
* "The team made a intentional decision to focus on defense."
* "The artist's use of color was intentional and symbolic."
The opposite of "intentional" is unintentional, which means something that happens by accident or without being planned.
It's important to note that "intentional" can have legal implications, particularly when it comes to crimes. For example, a crime can be considered intentional if the perpetrator planned and carried it out with the intention to harm someone.