Words beginning with 'non' are:
The word non means not doing something. This word is attached to other words at the beginning to indicate that it is not of that kind.
Words beginning with 'dec' are:decadedecalDecemberdecidedecibeldecimaldecimatedeclaredecodedecreasedecrepitdecry
Words beginning with you are limited to forms of you, youth and young. If you mean "Happy words beginning with a U sound," perhaps you refer to euphoric.
Words beginning with the letter A that have ghostly meanings include:apparitionapparitions
Positive words beginning with 'n' include:nicenobleneatnourishingnurturing
You can start the beginning of a essay with the words, 'the, what, our, you and it.' Try not to start you beginning paragraph with words like 'and, but, and because.'
Some words beginning with 'sub' are:subjectsublimesubmitsubmarinesubletsubterraneansubmersesubsistsubservientsubduesubliminalsubmerge
Some positive words beginning with M are:melodiousmerrymildMargaritamannerlymommymagneticmemoriesmassagemellowmanageablemarigolds
Words beginning wth M and ending with ING:makingmanagingmarchingmarkingmeaningmeltingmemorizingmentioningmentoringmigratingmissingmixingmovingmunching
four letter words beginning wih d are: Dart
Some words beginning with "xi" include xiphoid, xiphosuran, and xiphias.
Some six letter words beginning with e are:eatingerodesearwigearwaxelopedeitherextortexertsemesisemulgeeponymeagletearfulequate