Antonym: hearer. Similar words: speak, speak up, speak for, to speak of, so to speak, peak, maker, lawmaker. Meaning: ['spɪːkə(r)] 
n. 1. someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous) 2. electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance 3. the presiding officer of a deliberative assembly.
n. 1. someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous) 2. electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance 3. the presiding officer of a deliberative assembly. 
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151. Conversation flowed freely when the speaker invited discussion.
152. The speaker soon won his audience.
153. The speaker announced the establishment of a new college.
154. The speaker often referred to his notes.
155. Listen to the speaker and record what he says.
156. The speaker kept wandering off/away from the point.
157. The speaker said he would endeavor to illustrate.
158. I looked around to see who the speaker was.
159. The angry audience shouted the speaker down.
160. They've found out where the other speaker plugs in.
161. We couldn't hear the speaker at the back of the hall because her voice doesn't carry very well.
162. The audience are now invited to put questions to the speaker.
163. I turned and saw the speaker at the back of the room.
164. She was an excellent speaker,(www.Sentencedict.com) but I found her choice of topic strange.
165. The speaker tried to drill in his point but the crowd were not interested.
166. She prefaced her remarks with a few words of welcome to the guest speaker.
167. In his opening salvo the speaker fiercely attacked the Government's record on health care.
168. The sonorous voice of the speaker echoed round the room.
169. It is part of the chairman's duty to keep each speaker to the point to avoid wasting time.
170. The speaker took far too long working around to his main point.
171. You cannot assume that a speaker of English is ipso facto qualified to teach English.
172. The speaker attempted to rouse the crowd with a cry for action.
173. The speaker made full use of his arsenal of invective.
174. The speaker shall limit himself to several aspects of the subject.
175. It is not polite to interrupt a speaker with frequent questions.
176. I wish the speaker would confine himself to the subject.
177. He served for eight years as Speaker of the House of Representatives.
178. She came back at the speaker with some sharp questions.
179. Your question seems to have unnerved the speaker; he's been floundering about ever since you spoke.
180. The speaker soon whipped the crowd up until they were ready to march.