de·flate 
/dɪˈfleɪt/ verb
de·flates; de·flat·ed; de·flat·ing /dɪˈfleɪt/ verb 1 a [+ obj] : to release air or gas from (something, such as a tire or balloon) and make it smaller
▪ deflate the tires ▪ a deflated football
b [no obj] : to lose air or gas from inside
▪ The birthday balloons deflated after a few days. — opposite inflate 2 [+ obj] a : to make (someone) lose confidence or pride
▪ The harsh criticism left him utterly deflated. ▪ an insult that would deflate their egos
b : to show that (something) is not important or true
▪ deflate [=defuse] an argument ▪ He has worked to deflate popular myths about investing. 3 [+ obj] : to cause (prices, costs, etc.) to decrease : to cause (something, such as money or real estate) to lose value
▪ economic polices that could deflate (the value of) the dollar ▪ Deflated prices mean that farmers are getting less for their products.
▪ deflate the tires ▪ a deflated football
b [no obj] : to lose air or gas from inside
▪ The birthday balloons deflated after a few days. — opposite inflate
▪ The harsh criticism left him utterly deflated. ▪ an insult that would deflate their egos
b : to show that (something) is not important or true
▪ deflate [=defuse] an argument ▪ He has worked to deflate popular myths about investing.
▪ economic polices that could deflate (the value of) the dollar ▪ Deflated prices mean that farmers are getting less for their products.
