
As a doctor, I pronounce the word correctly, with a voiceless fricative, an example of which can be heard on the Merriam-Webster website. This is different from the voiced fricative heard in words like "the" and "this".
http://www.merriam-webster.com/dictionary/thesaurus
http://www.merriam-webster.com/dictionary/the
http://www.merriam-webster.com/dictionary/this
As a doctor, I urge Anonymous A to take his meds immediately before his brain explodes in an aneurysm from all the mad.
C̮̠̮͓̬͈ͅi͔ao͓̗ͅ, ͎͈̰̝̙̮T̘̖ͅh̞e̪̥̩͉ ̙̞̙͙̟͉D̮̼o̮̪̻c͈̹̣ͅt̻͍̼̥̰o̫̜̘̠ͅṛ̯͔̲.̺̲