The List
There are 250 4 letter words with N as the last letter. The highest scoring is JOHN at 14 points in Scrabble. 2 of them contain no vowel at all: HYMN, WYNN.
AEONAGENAGINAGONAIRNAKINALANAMENAMINANANANONAXONAYINAZANAZONBARNBAWNBEANBEENBEINBIENBLINBOONBORNBOUNBRANBRENBRINBUNNBURNCAINCANNCARNCHINCHONCIONCLANCLONCOINCONNCORNCRANCURNCYANDARNDAWNDEANDEENDERNDJINDOENDOONDOUNDOWNDUANDURNEARNEBONEEVNELANEOANETENEVENEXONEYENFAANFAINFAUNFAWNFEENFERNFIRNFLANFOENFOHNFOINGAENGAINGAUNGEANGIENGINNGIRNGLENGOONGOWNGRANGRENGRINGUANGURNHAENHAINHARNHERNHEWNHISNHOONHORNHWANHYENHYMNICONIKANIKONIRONJANNJEANJEONJINNJOHNJOINKAINKAONKARNKEENKERNKHANKILNKIRNKOANLAINLARNLAWNLEANLIENLIMNLINNLIONLOANLOINLOONLORNLOUNLOWNMAINMAUNMAWNMEANMEINMIENMOANMOONMORNMOWNMUONNAANNAINNEMNNEONNOONNOUNNOWNOMENOPENOURNOVENOXENPAANPAINPEANPEENPEINPEONPERNPHONPIANPIONPIRNPLANPOWNPYINQUINRAINRAUNRAWNREANREENREINROANROINROONRUINSAINSAWNSCANSEANSEENSEWNSHANSHINSHUNSIENSIGNSKENSKINSOONSORNSOWNSPANSPINSPUNSTENSTUNSUNNSWANSYENTAINTARNTEENTEINTERNTHANTHENTHINTHONTIANTOONTORNTOUNTOWNTRINTRONTUANTURNTWINTYINUDONULANUPONVAINVEINVULNWAINWARNWEANWEENWHENWHINWINNWOONWORNWRENWYNNYARNYAWNYEANYUANZEINZOON