sem (nyomatékos tagadás)

This construction is a highly frequent, standard way to express absolute negation in Hungarian across all registers.

1. Structure and Morphology
The pattern typically looks like this: egy + [minimizer noun + possessive/case suffix] + sem. To add emphasis, egy is very frequently replaced or expanded by egyetlen (single) or egyetlen egy (e.g., Egyetlen szót sem szólt - He didn't say a single word). While the minimizer is often the direct object taking the accusative case (e.g., egy szót sem - not a single word), the exact same pattern applies to subjects in the nominative case (e.g., Egy lélek sem volt ott - Not a single soul was there), expressions of time (e.g., Egy percig sem - Not even for a minute), and possessed nouns (e.g., Egyetlen barátja sincs - He doesn't have a single friend). The particle sem follows as a separate word. Note that in colloquial speech and set phrases, the word egy is frequently dropped entirely, especially in the preverbal position (e.g., Szót sem szólt - He didn't say a word, Fillért sem költött - He didn't spend a penny).

2. Preverbal Word Order
When the [minimizer + sem] phrase is placed in the preverbal focus position, it triggers verbal-prefix separation. The conjugated verb must immediately follow the sem, and any verbal prefix (coverb) is pushed behind the verb (e.g., Egy fillért sem költött el - He didn't spend a single penny, not elköltött).

3. Postverbal Word Order (Negative Concord)
Because Hungarian uses Negative Concord, if the minimizer is placed after the verb, the verb itself must be negated with nem. The structure becomes nem + verb + [prefix] + minimizer + sem. Just like preverbal focus, nem triggers verbal-prefix separation (e.g., Nem költött el egy fillért sem - He didn't spend a single penny). This is a highly frequent, standard structure. Unlike the preverbal structure, the word egy is normally kept in this postverbal position.

4. The Sincs / Sincsenek Merger
When the verb is the negative existential or possessive nincs (or plural nincsenek), a special merger occurs. If the minimizer is in the preverbal position, the particle sem and the verb nincs merge into a single word: sincs (or sincsenek). For example: Egy fillérem sincs (I don't have a single penny). However, if the minimizer is placed after the verb, the verb remains nincs and the minimizer takes sem normally: Nincs egy fillérem sem (I don't have a single penny). Crucially, sincs and sincsenek are strictly present-tense forms. In the past or future tense, the verb 'to be' reverts to standard negative concord using sem volt or sem lesz (e.g., Egy fillérem sem volt - I didn't have a single penny, Egy fillérem sem lesz - I won't have a single penny).

5. Sem vs. Se
Historically, sem derives from is (also/even) + nem (not), making it inherently scalar. In contrast, se derives from is + ne. Therefore, in imperative or subjunctive moods (commands), you must use se instead of sem (e.g., Egy szót se szólj! - Don't say a single word!). However, in modern colloquial Hungarian, se is extremely common as a casual drop-in replacement for sem in declarative sentences as well (e.g., Egy szót se szólt - He didn't say a single word).

6. Contrasts

• Literal quantity vs. Minimizer: Without sem, Nem szólt egy szót (He didn't say a word) is natural. For the strong minimizer ('He didn't say a single word'), add sem: Nem szólt egy szót sem. To express a literal quantity contrast ('He didn't say ONE word, but two'), you must place egy in the preverbal focus position with heavy stress: Nem EGY szót szólt (hanem kettőt).
• Negative pronouns: While you can say Semmit nem szólt (He said nothing), using a minimizer like Egy szót sem szólt (He didn't say a single word) is much more idiomatic and expressive.