Hedging (e.g., "sort of", "kind of")
Use of (super) polite forms (e.g., "Would you mind...")
Use of tag questions (e.g., "You're going to dinner today, aren't you?")
Emphatic language and intensifiers (e.g., "so", "very")
Use of empty adjectives (e.g., "divine", "lovely")
Hypercorrect grammar and pronunciation
Use of direct quotations
Special lexicon (more words for colors)
Question intonation in declarative statements
Avoiding coarse language
Lack of humor
Apologizing more
Indirect commands and requests