Slimy (adjective)

1. Covered with or resembling slime.
2. Disgustingly or distastefully insincere, or showing a lack of moral principles.

Origin:

Middle english, from old english slyme "slime, mud".

Examples:

1. The cave walls were slimy with moss.
2. A slimy trail of snail.
3. The politician gave a slimy answer to the question.
4. His slimy attitude made me sick.
5. The movie was a slimy romantic comedy.