Dull is a related term of infatuate.
In lang=en terms the difference between dull and infatuate
is that
dull is to lose a sharp edge; to become dull while
infatuate is to inspire with unreasoning love or attachment.
As adjectives the difference between dull and infatuate
is that
dull is lacking the ability to cut easily; not sharp while
infatuate is (obsolete) infatuated; full of unreasoning love or attachment.
As verbs the difference between dull and infatuate
is that
dull is to render dull; to remove or blunt an edge or something that was sharp while
infatuate is to inspire with unreasoning love or attachment.