Abstract: A snore inhibiting device comprises a moulding of resilient yieldable material formed to be complementary to the shape of the teeth of the upper arch of a user, so as to have a plurality of interconnected pockets to closely engage the teeth of the upper arch, and also having a depending flange which is co-operable with the lower lip of a user, so as to obstruct the air flow passage through the mouth to the lungs, the depth of the flange being such that the passage opens upon wide opening of the mouth, and is such that the mouth can be closed with comfort.