minish

[min-ish] /ˈmɪn ɪʃ/
verb (used with object), verb (used without object), Archaic.
1.
to diminish or lessen.
Origin
1300-50; late Middle English, variant (assimilated to -ish2) of menuse < Middle French menu(i)sier < Vulgar Latin *minūtiāre to lessen. See minute2, mince