'Hanu' suggests ‘chin’ plus the suffix 'mat' denotes ‘possession’, and implicitly ‘excellence’ or ‘superiority’, atiśāyana. ‘Hanuman’ would So indicate ‘the one with fantastic chin’. According to Sanskrit lexicographers, letters On this title denote the following: लील्यो ताहि मधुर फल जानू ॥१८॥ प्रभु मुद्रिका मेलि मुख माहीं । Lord Hanuman https://www.youtube.com/watch?v=6cAOQp6Twlc&t=7s