titted

As an adjective titted

is having a specified kind of tits (breasts).

As a noun titter is

a nervous or repressed giggle.

As a verb titter is

to laugh or giggle in a somewhat subdued manner.

As adjectives the difference between fitted and titted

is that fitted is incorporating all of the fittings into connected units while titted is having a specified kind of tits (breasts).

As a verb fitted

is (fit) (to tailor, change size).