We demonstrate that Majoron, a pseudo-Nambu-Goldstone boson emerging due to the spontaneous lepton number symmetry breaking, serves as potential freeze-in dark matter within the keV-GeV mass regime due to a newly introduced explicit lepton number symmetry breaking higher dimensional operator. The proposal establishes a link between dark matter and neutrino physics within a minimal extension of Standard model featuring a singlet complex scalar and two singlet right-handed neutrinos.