Derivation vs Inflection

Hungarian grammar traditionally distinguishes three suffix types. Their usual ordering helps you understand long words, although established exceptions and differences in terminology must also be recognized:

• Képző (Derivational Suffix): Changes the core meaning or part of speech (e.g., -ász/-ész, -ít). Crucially for English speakers, traditional Hungarian grammar also classifies infinitives (-ni) and participles (-ó/-ő, -ott/-ett, -andó/-endő) as képző (specifically, igenévképzők). You can stack multiple képzős (e.g., kertészet: kert + -ész + -et).
• Jel (Inflectional Marker): Adds grammatical information like plural (-k, -i), possession (note that in Hungarian, possession is primarily marked on the possessed object, though the possessor can also take the dative -nak/-nek marker), tense (-t/-tt), mood (e.g., conditional -na/-ne, imperative -j), or comparison (-bb). Multiple jels can be stacked, but they follow a strict internal order depending on the specific markers used (e.g., the plural of a possessed object -i- precedes the possessor person -m as in barátaim, but the possession marker -é precedes the plural of a possessed object (-i) as in barátéi).
• Rag (Inflectional Ending): Defines the word's role in the sentence, such as case endings (e.g., inessive case) or verb conjugation. A word can only have one rag, and it is generally the absolute final suffix, known as a szózáró toldalék (word-closing suffix). While clitics (like the interrogative -e) can attach after it, there are also rare, lexicalized exceptions where a derivational képző follows a rag (as discussed below).

Note that the choice between suffix variants separated by slashes (like -ban/-ben) is dictated by vowel harmony. Furthermore, these suffix types are entirely optional; a word does not need all three. A valid word can consist of just a stem and a rag, or a stem and a képző. However, because a rag gives a word its syntactic role, a word without a visible rag (like nominative nouns or third-person singular present indefinite verbs) actually takes a zero rag (∅).

The basic productive pattern places derivation before inflection. Once a jel or rag is added, you generally cannot add another képző. A fully stacked example demonstrating this rule is barátságomat (my friendship [accusative]): barát [stem] + -ság [képző] + -o- [linking vowel] + -m [jel] + -a- [linking vowel] + -t [rag]. Notice the linking vowels (kötőhangzó) like -o- and -a-. While their primary function is phonetic glue to make pronunciation easier, many modern learning resources teach them as integrated parts of suffix variants (e.g., -m / -am / -om / -em / -öm). Furthermore, they can and do carry grammatical distinctions, such as distinguishing nouns from adjectives (e.g., vadok for wild animals vs. vadak for wild ones).

Advanced Nuance: While introductory textbooks teach this as an unbreakable mathematical rule, authoritative linguistic sources note established, lexicalized exceptions where the boundary is inverted. For example, an inflectional jel can precede a derivational képző (e.g., kisebbít "to make smaller"), and a rag can precede a képző (e.g., nagybani "wholesale").

Why Birtokos Személyjel?
Many modern descriptions call possessive person suffixes birtokos személyjelek. A case ending can follow them: barátaimban means “in my friends,” with plural possession and first-person possession before final -ban. Thus the possessive -m does not close the word as a case ending normally does. You will also encounter birtokos személyrag; the terminology remains debated, so the older label does not make the form itself wrong.