necessary
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necessary
Expresses that something is necessary or urgently needed. This word is used almost exclusively in combination with verbs like 'sein' (to be) or 'haben' (to have).
Um das Projekt fortzusetzen, sind weitere finanzielle Mittel vonnöten.
In order to continue the project, additional financial resources are necessary.
The word is made up of the preposition 'von' (of/from) and 'Nöten', the dative plural of the noun 'die Not' (need, distress). So it literally means that something is 'von Nöten' (of need), meaning it is urgently needed.
Für diese schwierige Aufgabe ist äußerste Präzision vonnöten.
Extreme precision is necessary for this difficult task.
'vonnöten' is used only predicatively, that is, after a verb like 'sein' (to be). It never stands directly before a noun. You say 'Geduld ist vonnöten' (patience is necessary), but not 'die vonnötene Geduld'.
Für den Wiederaufbau des Hauses ist viel Geld vonnöten.
A lot of money is necessary for rebuilding the house.
This word belongs to elevated written language and sounds formal. It is used only rarely in everyday spoken language.
Eine schnelle Entscheidung war vonnöten, um das Problem zu lösen.
A quick decision was necessary in order to solve the problem.
necessary
'nötig' and 'vonnöten' both mean that something is needed or necessary. 'nötig' is the normal everyday word and fits in many kinds of sentences: 'Das ist nötig' (That is necessary) or 'Wir brauchen die nötigen Unterlagen' (We need the necessary documents). 'vonnöten' sounds more elevated and is almost always used with 'sein' (to be) or 'haben' (to have), for example 'Hilfe ist vonnöten' (Help is needed). The words can be confused because their meanings are very similar. In practice: in everyday language, 'nötig' is almost always the more natural choice; 'vonnöten' is more suitable in formal or written language.
Wegen des starken Regens ist in der Schule besondere Vorsicht vonnöten.
Because of the heavy rain, special caution is needed at school.
Am Montag ist für die Kundin ein neuer Termin beim Arzt nötig.
On Monday, a new doctor's appointment is necessary for the client.