Unsportsmanlike (adjective)

1. Not having the qualities of a good sportsman such as fairness, respect and dignity.
2. Being unfair or disrespectful in a sporting context.

Origin:

Derived from the word 'sportsmanlike' meaning having the qualities of a good sportsman such as fairness, respect and dignity.

Examples:

1. The basketball player's unsportsmanlike behavior, such as trash talking and foul play, was unacceptable.
2. The soccer player's unsportsmanlike conduct, such as diving and arguing with the referee, was frowned upon.
3. The football player's unsportsmanlike actions, such as taunting and excessive celebration, earned him a penalty.
4. The hockey player's unsportsmanlike gestures, such as slashing and roughing, were punished with a suspension.
5. The baseball player's unsportsmanlike attitude, such as throwing equipment and arguing with the umpire, was considered unprofessional.