The word "hets" uses 4 letters: ehst.
hets is a valid word in this word list. For a definition, see the external dictionary links below.
Words formed by adding one letter before or after hets (in bold), or to ehst in any order:
b - beths c - chest o - ethos shote those a - haets haste hates heats f - hefts i - heist n - hents shent thens s - hests h - heths k - khets m - meths e - sheet these u - shute t - teths w - thews whets