Synonym: animated, dynamic, energetic, lively, spirited, vivacious, working. Antonym: dormant, inactive, passive. Similar words: actively, attractive, active transport, activist, activity, detective, objective, perspective. Meaning: ['æktɪv] 
n. 1. chemical agent capable of activity 2. the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb 3. a person devoted to the active life. adj. 1. tending to become more severe or wider in scope 2. engaged in or ready for military or naval operations 3. disposed to take action or effectuate change 4. taking part in an activity 5. characterized by energetic activity 6. exerting influence or producing a change or effect 7. full of activity or engaged in continuous activity 8. in operation 9. of the sun; characterized by a high level activity in sunspots and flares and radio emissions 10. expressing that the subject of the sentence has the semantic function of actor: "Hemingway favors active constructions" 11. expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water') 12. (of e.g. volcanos) capable of erupting 13. (of e.g. volcanos) erupting or liable to erupt 14. engaged in full-time work.
n. 1. chemical agent capable of activity 2. the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb 3. a person devoted to the active life. adj. 1. tending to become more severe or wider in scope 2. engaged in or ready for military or naval operations 3. disposed to take action or effectuate change 4. taking part in an activity 5. characterized by energetic activity 6. exerting influence or producing a change or effect 7. full of activity or engaged in continuous activity 8. in operation 9. of the sun; characterized by a high level activity in sunspots and flares and radio emissions 10. expressing that the subject of the sentence has the semantic function of actor: "Hemingway favors active constructions" 11. expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water') 12. (of e.g. volcanos) capable of erupting 13. (of e.g. volcanos) erupting or liable to erupt 14. engaged in full-time work. 
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181. I took but little active part in last row and am thus out of the scrape.
182. Laboratory tests are frequently normal in patients with unequivocally active disease and viceversa.
183. He was an active member of the Educational Publishers Council.
184. To many of them the active life seems more deserving because of the amount of good works and preaching it performs.
185. Do you buy environment-friendly products and take an active interest in nature?
186. The laboratory tests lack specificity and can be normal in the presence of clinically active disease.
187. If they can t tell us that, we need at least to know the active ingredients.
188. In old age she was troubled by deafness and played little active part in her husband's later political career.
189. Lawyers said a general on active duty, Herna n Rami rez, was also indicted.
190. Jenks believed international organizations were not mere conference secretariats, but should be active participants in shaping the postwar world.
191. This is why caffeine is the active ingredient in many prescription and nonprescription migraine treatments.
192. Almost inadvertently, through such activity, structures emerged which promoted active citizenship through community education and development initiatives.
193. Nor, however, did he want to be an active participant.
194. The latter is likely to provide some scope for active involvement in the worshipping and musical life of the parish.
195. If it had been Lucy in whom he had shown an active interest, Maureen would have been far from complacent.
196. The active part of which is able to join mutually repellent substances such as oil and water.
197. Most residents of homes for the elderly are in their eighties and have come there towards the end of an active life.
198. Do you consider yourself an active participant in the political world?
199. He was an active member of the Literary and Philosophical Society of Liverpool from 1837 onwards and served as its treasurer.
200. Packford was an active member of his local Labour Party, sympathetic to the idea of the paper,[sentencedict.com/active.html] and liked Keith.
201. The industry surveys are based on the amounts of active ingredients made for animals by the institute's member companies.
202. We have not passed that subtle line between childhood and adulthood until we move from the passive voice to the active voice- that is, until we have stopped saying "It got lost," and say, "I lost it.". Sydney J. Harris 
203. On the other hand, capitalist economies are based on the willing and active involvement of the very workers they are exploiting.
204. During its time in Oxfordshire it's seen active duty most recently in the Gulf War.
205. And it begins with the active involvement of every manager.
206. Licorice Phytosome enhances better absorption of the active ingredients and increases their effectiveness for a prolonged period of time.
207. And if you do eat out regularly, you definitely should take an active interest in eating better restaurant food.
208. The most obvious change in nursing practice apparent to returners is the active involvement of patients and clients in their own care.
209. The mounting of school productions and active involvement in community or touring theatre initiatives are thus of immense value.
210. Political action committees, which are more active in congressional races, represented only 2 percent of the presidential campaign coffers.
More similar words: actively, attractive, active transport, activist, activity, detective, objective, perspective, distinctive, protective, productive, collective, effectively, respectively, effectiveness, irrespective of, tactic, action, motive, native, fraction, practice, reaction, relative, incentive, practical, sensitive, supportive, executive, narrative.