[header] How to pronounce indubitably [title] Position your tongue and lips in a position so that you can create an " i " sound. [step] Your tongue will be close to the roof of your mouth, but there should be some space for the sound of the vowel to come through. [title] Bring your tongue to the roof of your mouth to create an " n " sound. 
[title] Move the tip of your tongue to the roof of your mouth. [step] Force air through your mouth and curve your lips in a circle, thus making the sound " doo.