deferential (adj.)

• accommodating
• affable
• agreeable
• attentive
• ceremonious
• civil
• complaisant
• conscientious
• considerate
• courteous
• disarming
• duteous
• dutiful
• ethical
• fair
• graceful
• gracious
• honorific
• insinuating
• moral
• obedient
• obliging
• obsequious
• observant
• polite
• prone
• prostrate
• regardful
• respectful
• saccharine
• scrupulous
• servile
• silken
• silky
• solicitous
• subservient
• tactful
• thoughtful
• urbane