Hungarian is often used as the prototypical example of a heavily agglutinative, synthetic language, and with regards to noun declension and derivational morphology this is doubtless true; Hungarian nominal morphology has a fairly regular agglutinative paradigm with an invariant plural marker -Vk-. However, the verbal conjugation system seems to be fairly fusional, with three or so distinct sets of endings that are not formed through agglutination.
Present Indefinite: -ok, -sz, -Ø, -unk, -tok, -nak
Present Definite: -om, -od, -ja, -juk, -tájok, -ják
Past Indefinite: -tam, -tál, -ott, -tunk, -tatok, -tak
Past Definite: -tam, -tad, -ta, -tuk, -tátok, -ták
Conditional endings seem to be derived from the present endings, with the addition of a suffix -nV- directly after the root. However, there is variation in the vowel and the 2nd person conditional ending seems to come from the past ending, rather than the present ending.
Subjunctive endings mostly seem to derive from a combination of a -s- suffix, followed by Present endings, with a different marker (-on) in the third person singular indefinite subjunctive.
Considering that these 4-6 distinct sets of endings within the same paradigm, whereas ancient IE languages tend to have between 2 and 3 in the active ("primary", "secondary", and "perfect"), can it not be stated that Hungarian is more (or at the very least as) agglutinative than classical IE languages?