Mill Math Make Move MASH Milk Melt... etc. There is more than one 4 letter word that starts with M
Image. Probably quite a few others too
A four letter word starting with the letter a is able.
A four letter word starting with J is jump or joke.
urge
MakeMindMineMastMassMustMeatMeetMinkMireMadeMaidMazeMoreMood
a four letter word starting with Y could be: Yolk (as in an egg yolk) Yack Yarn Yawn York
well you only need one more letter if it's 4 letters and starting with you... try the alphabet
Ham.
Merl
kook
AbbaActaAghaAgmaAlbaAlfaAlgaAlmaAmiaAngaAnnaAnoaAnsaAntaAquaAreaAriaAseaAtmaAura
monk
Aten