It's not 4 letters - treif
A four letter word meaning not kosher is: tref
wile
germ
It's usually "treif" but might be "tref."
antsartsABC'sactsands
Into.
A four letter word that starts with J and ends with M: jism.
Team
bend..........
TourTintTiltTimeTameTankToneTuneTentTrueTrim
NounNumbNiceNeatNestNameNailNote
MeatMateMakeMindMineMintMoodMeekMaleMailMassmast