|   New    Known    Review | 
| narcotic | 
|     | 
| n.  (麻醉的,催眠的) addictive drug, such as opium, that reduces pain, alters mood and behavior; inducing sleep | 
|   New    Known    Review | 
| nausea | 
|     | 
| n.  (作嘔,噁心) feeling of sickness in stomach by an urge to vomit; strong aversion; disgust | 
|   New    Known    Review | 
| nautical | 
|     | 
| a. Syn. marine; maritime; naval (航海的) relating to ships, sailors, or navigation | 
|   New    Known    Review | 
| negate | 
|     | 
| v. Syn. nullify; deny (拒絕,否定,取消) cancel out; make ineffective or invalid; deny | 
|   New    Known    Review | 
| negation | 
|     | 
| n.  (取消) act of denying; assertion of the nonrealistic or untruthfulness of anything | 
|   New    Known    Review | 
| neglect | 
|     | 
| v. Syn. disregard; ignore (疏忽,忘記) disregard; ignore; pay little or no attention to | 
|   New    Known    Review | 
| negligence | 
|     | 
| n. Syn. neglect (疏忽,沒能盡力的) neglect; failure to take reasonable care; state or quality of being negligent | 
|   New    Known    Review | 
| negligible | 
|     | 
| a. Syn. insignificant; tiny (可忽略不計的) so small, trifling, or unimportant that it may be easily disregarded | 
|   New    Known    Review | 
| negotiable | 
|     | 
| a.  (可商量的,(支票)可兌現的) capable of being negotiated; transferable by assignment or endorsement to another person | 
|   New    Known    Review | 
| neurotic | 
|     | 
| a. Syn. nervous (神經病患者) of or pertaining to the nerves; seated in the nerves; nervous |