mussitate
This is not to miss . You have your voice but you don't want others to hear that .... then this is your word. Just to say things without making a sound but with your athletic lips at your disposal. By the way... lets hint a bit of its etymology ....Mussitate comes from the Latin mussitāre, "speak indistinctly." Mutter also shares the same roots.
And its pronunciation goes like \MUHS-i-teyt\
Dictionary definition (verb) -- To silently move the lips in simulation of audible speech
Example sentence -- I don't want you to mussitate ... I want you to speak it loud and clear!!
Fun description -- We don't need any description here . You can find your own . Just go to your neighbourhood grocery shop and within all the chaos you start to mussitate your "chawal" and "daal" order. You won't be surprised if you get "Aata" instead of "Daal' and "Paapar" instead of "Chawal" .
By the way.... lets leave rice and wheat and move on to more useful stuffs... e.g. mussitating answers to your fellow mates when the exam is on. Not only mussitation ..... at first you look around to check that if any teacher is actually watching you or not and then if no one is watching.... you go for it but if a teacher is actually watching then you start rating the teacher on his/her strictness ... e.g. if he/she will take any action catching you on the act or just leave you giving a sweet little warning ..... after you are finished calculating the pros and cons ... you give it a shot . No less than a sleuth :P
P.S. -- Whatever you do in exam or in grocery that's your problem but you dare not forget this lovely word !! :)