The compound word **改掉 (gǎidiào)** is formed through the combination of the verb **改 (gǎi)**, meaning "to change" or "to alter," and the resultative complement **掉 (diào)**, which in this grammatical function signifies "to get rid of" or "to remove as a result of the action." Structurally, it follows the common Chinese verb-complement pattern where the first character denotes the action and the second describes its intended outcome. Therefore, **改掉** semantically conveys the meaning of "to change and thereby remove or discard," typically referring to eliminating a habit, custom, or undesirable trait through conscious alteration.