Synonym: grippe, influenza. Similar words: flunk, fluid, fluke, flush, fluent, fluffy, influx, fluster. Meaning: [fluː] 
n. an acute febrile highly contagious viral disease.
n. an acute febrile highly contagious viral disease. 
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121. This flu is a warning to me that my immune system is not as strong as it ought to be.
122. Withdrawal from heroin is actually like a severe attack of gastric flu.
123. She's been ill with flu but she's on the mend now.
124. When you're coming down with flu all you can do is batten down the hatches and wait for it to pass.
125. I'm feeling a bit feverish - I hope it's not the start of flu.
126. I've been in bed with flu and my legs are still feeling all wobbly.
127. I got flu last winter and was in bed for three weeks.
128. There's a lot of flu going round at the moment.
129. I had flu last week. And I was on holiday 'too!
130. There's a lot of flu about and people are going down like ninepins.
131. Tom was down with flu yesterday,[http://sentencedict.com/flu.html]so he didn't go to school.
132. I hope she hasn't caught flu. There's a lot of it about .
133. Barron invited her to the races and she agreed, but she caught flu and had to cry off at the last minute.
134. Now Haley is also battling the flu.
135. I had the flu and was confined to bed.
136. I got a real bad flu.
137. It's definitely cold and flu season.
138. Jane died in the flu epidemic in 1916.
139. Frank had a bad flu before Christmas.
140. He sat out Tuesday with the flu.
141. I think I've got gastric flu.
142. Fortunately(sentencedict.com), full-blown flu epidemics are relatively rare.
143. Report, page 11 Flu outbreak puts hospitals on alert.
144. The economy had not just a passing cold but a bad case of the flu.
145. The results could be vaccines against flu that provide much longer immunity against influenza, than do the present killed-virus vaccines.
146. I think I must have caught the flu from Sarah.
147. Derek Turnbull arrived at Murrayfield, but was sent home suffering from flu.
148. She came down with this summer flu everyone's getting and went home before I got in.
149. By the time I got home my body ached all over and I knew I was getting the flu.
150. Some doctors still dismiss the disease as being just another type of flu.
More similar words: flunk, fluid, fluke, flush, fluent, fluffy, influx, fluster, fluency, effluent, affluent, influenza, superfluity, flustered, influence, fluctuate, effluence, superfluous, confluence, fluorescent, fluctuation, mellifluous, influential.