hext

As a noun heat

is thermal energy.

As a verb heat

is to cause an increase in temperature of an object or space; to cause something to become hot often with "up".

As an adjective hext is

highest.

As adjectives the difference between next and hext

is that next is following in a sequence while hext is (obsolete|or|dialectal) highest.

As a determiner next

is the one immediately following the current or most recent one.

As an adverb next

is in a time, place or sequence closest or following.

As a preposition next

is on the side of; next to.

As a noun next

is the one that follows after this one.

As adjectives the difference between het and hext

is that het is heterosexual while hext is highest.

As a noun het

is a heterosexual person.

As a verb het

is past tense of heat.