Is it FEB-ROO-ARY? or FEB-YOU-ARY? Both are acceptable, but it is more common to hear someone say FEB-YOU-ARY 
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Here you can listen to a variety of people pronounce “February” on YouGlish.
And here’s a YouTube video about the different pronunciations…
You can improve pronunciation by listening real people in real situations and learn spoken real English.
Visit https://www.theypronounce.com