Synonym: if, provided. Similar words: at the thought of, when, where, wheat, wherein, whereas, aesthetic, all the time. Meaning: [ˈweðə] 
conj.1. (used to introduce the first of two or more alternatives, and sometimes repeated before the second or later alternative, usually with the correlative or): It matters little whether we go or stay. Whether we go or whether we stay, the result is the same. 2. (used to introduce a single alternative, the other being implied or understood, or some clause or element not involving alternatives): See whether or not she has come. I doubt whether we can do any better. 3. Archaic. (used to introduce a question presenting alternatives, usually with the correlative or). 4. whether or no, under whatever circumstances; regardless: He threatens to go whether or no. pron. Archaic. 5. which or whichever (of two)?.
conj.1. (used to introduce the first of two or more alternatives, and sometimes repeated before the second or later alternative, usually with the correlative or): It matters little whether we go or stay. Whether we go or whether we stay, the result is the same. 2. (used to introduce a single alternative, the other being implied or understood, or some clause or element not involving alternatives): See whether or not she has come. I doubt whether we can do any better. 3. Archaic. (used to introduce a question presenting alternatives, usually with the correlative or). 4. whether or no, under whatever circumstances; regardless: He threatens to go whether or no. pron. Archaic. 5. which or whichever (of two)?. 
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121. It's a moot point whether men or women are better drivers.
122. Whether you live in or live out is entirely up to you.
123. To this day, it's unclear whether he shot himself or was murdered.
124. I query whether he can be trusted.
125. They debated whether to compromise with the opposition parties.
126. Critics question whether price controls would do any good.
127. She stood on the threshold, unsure whether to enter.
128. This indicates whether remedies are suitable for children.
129. Whether he drives or flies, he'll be on time.
130. It's doubtful whether there'll be any seats left.
131. Ask him whether he would accept the post.
132. It's debatable whether or not the reforms have improved conditions.
133. The doctors'sense was that the girls fared well, but it remained to be determined whether they suffered any brain damage, said Dr. John Frazee, another neurosurgeon.
134. They are undecided as to whether to buy a new car.
135. Let's spin the coin to decide whether to go or not.
136. I don't know whether she's in the city or not.
137. It seemed to me that she was in trouble whether Mahoney lived or died.
138. He was not sure whether he wished her to stay or go.
139. The committee will debate whether to lower the age of club membership to 16.
140. Whether this should be enforced by law or not is a moot point.
141. Please state whether you are single, cohabiting, married, separated, divorced or widowed.
142. You're fucking well coming whether you want to or not.
143. There was some debate as to whether the benefit scheme should be withdrawn or simply allowed to wither on the vine.
144. She asked her boss whether she could have the day off.
145. Computer models help to determine whether a particular area is likely to flood.
146. She doubts whether she'll ever be able to fulfil her ambition.
147. It was difficult to gauge whether she was angry or not.
148. Amnesty International is trying to establish whether the police acted lawfully in shooting him.
149. There's considerable uncertainty as to whether the government's job creation strategies will work.
150. I know which area they live in,[sentencedict.com] but whether I can find their house is a different matter.
More similar words: at the thought of, when, where, wheat, wherein, whereas, aesthetic, all the time, rhetoric, by the time, on the table, even when, elsewhere, at the time of, overwhelm, wheelchair, for the time being, overwhelming, together, go together, see that, method, ethnic, ethics, get hold of, get together, altogether, ethical, nonetheless, together with.