In words such as �abso-bloody-lutely', the 'bloody' part is, strictly-speaking, known as an �infix'...and the word as a whole is not really a tmesis.
Strictly speaking, tmesis involves the insertion of another word or words into a compound word. For example, in the phrase: "for no reason whatso-bloody-ever", there is a tmesis, since 'whatsoever' is a compound word made up of what, so and ever. 'Absolutely' is not a compound word and nor is �sincerely'.
As a matter of interest, there is also a word, 'tmema', meaning a segment and the adjective from 'tmesis' is 'tmetic'...so that makes three 'tm... words.