Pathetic (adjective)

1. Evoking pity or sadness because of inadequacy, failure, or unhappiness.
2. Inadequate or failing to meet the expectations.
3. So bad as to be pitiful or comical.

Origin:

From the greek pathos "feeling, emotion" + -etic.

Examples:

1. He felt pathetic for not being able to finish the race.
2. The team's performance was pathetic, they lost by a large margin.
3. The movie was so bad it was pathetic.
4. The conditions in the refugee camp were pathetic.
5. His excuse was pathetic, it was obvious he was lying.