Some seven letter words with N as the fifth letter are
geneticsenatorlengthsjanitormonitormonster
strength
overnight
The word is rodents.
Some seven letter words ending in N are:BritainbullioncautioncurtaindrunkendungeonemotionenvironerosionfashionfissiongelatinLincolnkitchenmansionmentionmillionmissionovationpassionpelicanportionpuritanvenisonversion
geneticsenatorlengthsjanitormonitormonster
Chasten
strength
overnight
Asians!
equine
thrashing squashing
Deline
The word is rodents.
romantic
6 letter words with L being 3rd letter and N as the 5th:AilingAslantBalingBelongBylineColonsColonyDolingFelineFelonsFelonyFilingGalenaHalingHolingIdlingInlandIslandMelonsNylonsOblongOglingOilingOnlinePalingPilingPolingPulingPylonsRelentRelineRelinkRilingRulingSalineSalonsSilentSolingSplineSplintTalentTalonsTilingUnlinkUplandWalingWilingXylene
signals