northeastward vs. northeastwardly
northwestward vs. northwestwardly
nonabsorbent vs. nonabsorptive
nonadsorbent vs. nonadsorptive
nonmechanical vs. unmechanical
nonaggressive vs. unaggressive
nontransferable vs. unassignable
nontransferable vs. untransferable
noncollapsable vs. noncollapsible
nontelescopic vs. nontelescoping
nonconducting vs. nonconductive
nonconformist vs. unconformist
nonconforming vs. nonconformist
noncontroversial vs. uncontroversial
nontraditional vs. untraditional
nonmandatory vs. nonobligatory
nonenterprising vs. unenterprising
nonexplorative vs. nonexploratory
nonexploratory vs. unexploratory
nonexploratory vs. unexplorative
nonextensile vs. nonprotractile
nonautonomous vs. nonsovereign
nonhierarchic vs. nonhierarchical
noninstitutionalised vs. noninstitutionalized
noncommunicable vs. noncontagious
noncommunicable vs. nontransmissible
nonhereditary vs. nontransmissible
nonintegrated vs. unintegrated
nonheritable vs. noninheritable