adjective - related but not directly; secondary or indirect
verb - to manipulate someone psychologically by making them question their own memory, perception, or sanity
noun - a situation or subject that is complicated and full of hidden problems or risks
adjective, formal - involving deep thinking rather than emotions
noun, technical - an illegal act of touching the ball with the hand or arm when playing football
adjective - showing an attitude of being superior to others
adjective, formal - (of buildings, mountains, etc.) very tall or high and impressive