(1) 'Expensive' means costing a lot of money. 'Precious' and 'costly' are similar in meaning (valuable, high-priced). 'Cheap' is the opposite, meaning low in price. (2) 'Forgot' means failed to remember. 'Revised' and 'ignored' are not opposites. 'Remembered' is the opposite of 'forgot'. (3) 'Continued' means kept going or persisted. 'Began' and 'started' are similar in meaning. 'Stopped' is the opposite of 'continued'. (4) 'Always' means every time or without exception. 'Often' and 'sometimes' indicate frequency but not opposite. 'Never' is the opposite, meaning not at any time. (5) 'Excitement' means a feeling of enthusiasm or eagerness. 'Interest' and 'enjoyment' are similar positive feelings. 'Boredom' is the opposite, meaning lack of interest. (6) 'Nervously' means in an anxious or fearful manner. 'Sadly' and 'joyfully' describe different emotions. 'Confidently' is the opposite, meaning in a self-assured manner. (7) 'Vibrant' means bright, vivid, or intense. 'Bright' and 'shiny' are similar in meaning. 'Dull' is the opposite, meaning lacking brightness or liveliness. (8) 'Unique' means one of a kind or special. 'Different' and 'unusual' are similar in meaning. 'Common' is the opposite, meaning ordinary or frequently found.