Answer:
1. Diction - the manner of expressing ideas in words.
2. Trite - Worn out by use
3. Slang - Words or phrases usually characterized by special vividness and coloring(language outside of conventional use).
4. Colloquial - used in the everyday, informal talk, but not in formal English.
5. Stilted - Stiffly dignified or formal.
6. Vague - not definitely or precisely expressed.