Lousy (adjective)

1. Infested with lice.
2. In poor condition; inferior or of poor quality.
3. Unpleasant or annoying.

Origin:

Late 19th century: of uncertain origin; perhaps from low german lus "lice", on the pattern of flea-bitten.

Examples:

1. He had a lousy case of head lice.
2. The food was lousy and inedible.
3. The service was lousy.
4. The weather was lousy and dreary.
5. The movie was lousy and not worth watching.