diminute /ˈdɪmɪnjuːt/adjective 1/dɪˈmɪnjuːt/ verb 1forms 5 adjective1 •(no longer used) Small; diminutive.prices made diminute and lessened to such proportions and abatements as that fault should make — 1651 diminute /dɪˈmɪnjuːt/ verb1 •To reduce, to lessen. formsdiminuted · diminuting · diminutes · more diminute · most diminute