EGHISNM
Make words with M
Never: plural or third-person -S suffix
Missed: GIMME
ENMESH ENMESHING GEMMING GEMINI HEMMING IMMESH IMMESHING IMMENSE IMMENSENESS MEME MESH MESHING MESS MESSINESS MESSING MIEN MIME MIMING MINE MINI MINIM MINING MINISH MINISHING MISS MISSING NEMESIS SEEM SEEMING SEMEN SEMI SHIM SHIMMING
Pangrams: ENMESHING IMMESHING MESHING