'Genug', 'ein paar' and 'ein bisschen' never change, but 'viel' and 'wenig' sometimes do
German loves endings. Articles and adjectives change with gender, case and number, so it is natural to expect every word before a noun to change too. A small group of everyday quantity words refuses to do this. Genug, ein paar, ein bisschen, ein wenig, etwas and mehr look the same in every sentence, whatever noun follows and whatever case you are in.
Two very common words sit in between. Viel and wenig stay bare before singular nouns like Zeit or Geld, but in the plural they normally take endings: viele Bücher, wenige Leute. English speakers slip in both directions. They add endings that do not exist, such as *mehre Leute or *ein paaren Freunden. They also forget the ending where it is needed, as in *viel Bücher.
Think of the fixed words as frozen blocks. The ein in ein paar and ein bisschen is not the article ein, so it never becomes einem or einen. Only the noun after the block changes, for example with the dative plural -n.
In the second example, mit takes the dative. Freunden shows that, but ein paar stays exactly as it is. Compare einige, which means much the same thing but behaves like a normal plural word: mit einigen Freunden. That is why einige does not belong to this group.
The rule of thumb is simple. If the quantity word is on the fixed list, never add an ending. If it is viel or wenig, check whether the noun is singular or plural.
Ein bisschen, ein wenig and etwas all mean a small amount. They go with uncountable things like sugar, milk or luck, and they never change. Ein wenig sounds a little more formal than ein bisschen.
Genug and mehr work with singular and plural nouns alike. There is no plural form *mehre. The word mehrere (several) does exist, but it is a different word, and it does take endings.
Viel and wenig stay bare before a singular noun. Before a plural noun you normally add -e in the nominative and accusative. In the dative plural the form is vielen or wenigen.
Zu viel and wie viel follow the same pattern as viel: they are bare with a singular noun and usually become zu viele or wie viele with a plural one.
- Viel and wenig are more flexible than a strict rule suggests. In casual speech you will hear bare forms before plurals, such as viel Leute, and in older or formal texts you may meet endings in the singular, such as mit vielem Wasser. For your own German, the safe choice is bare in the singular and viele or wenige in the plural.
- Wenig and ein wenig are not the same. Wenig Zeit means hardly any time and sounds negative. Ein wenig Zeit means a bit of time and sounds positive, just like English few versus a few.
- Used on their own as adverbs, viel and wenig never change: Ich arbeite viel, I work a lot.
- Do not treat ein paar as a plural of ein Paar (a pair). Written with a small p, it simply means a few.
Treat genug, mehr, etwas, ein paar, ein bisschen and ein wenig as frozen blocks: they never take endings, even in the dative or the plural. Viel, wenig, zu viel and wie viel stay bare before singular nouns (viel Zeit) but normally take endings before plurals (viele Bücher, mit vielen Leuten).







