Because of a difficult or forced situation, or because there is no other option; reluctantly, but out of necessity.
example
Da der letzte Zug bereits abgefahren war, musste er notgedrungen ein teures Taxi nehmen.
Since the last train had already left, he had to take an expensive taxi out of necessity.
Usage tips
Word structure
The word is made up of 'Not' (need, emergency) and 'gedrungen' (from 'dringen', to press/urge). So it literally means that someone is pushed or forced into something by a difficult situation.
EXAMPLE
Er musste die Entscheidung aus reiner Not treffen, sie war also notgedrungen.
He had to make the decision out of sheer necessity, so it was notgedrungen.
Sentence structure and usage
'Notgedrungen' (out of necessity) is almost always used as an adverb that describes a verb. Using it as an adjective directly before a noun, for example 'eine notgedrungene Reise' (a journey made out of necessity), is very rare and sounds unnatural.
EXAMPLE
Da sein Auto kaputt war, fuhr er notgedrungen mit dem Fahrrad zur Arbeit.
Since his car was broken, he rode his bike to work out of necessity.
Typical collocations
The word is often combined with verbs that express a decision or action one reluctantly agrees to. Typical phrases are 'notgedrungen akzeptieren' (to accept out of necessity), 'notgedrungen zustimmen' (to agree out of necessity), and 'notgedrungen bleiben' (to stay out of necessity).
EXAMPLE
Sie stimmte dem Kompromiss notgedrungen zu, obwohl sie nicht überzeugt war.
She agreed to the compromise out of necessity, although she was not convinced.
Compare with
synonym
notgedrungen vs wohl
probably / well
'wohl oder übel' and 'notgedrungen' mean very similar things: you do something because there is no better option, even if you do not want to. 'wohl' by itself has many other meanings, but in the fixed expression 'wohl oder übel' it matches 'notgedrungen'. 'wohl oder übel' sounds a bit more figurative and is used as a whole expression. 'notgedrungen' is shorter and works well when you want to emphasize the pressure or lack of choice.
notgedrungen
Heute rufst du notgedrungen den Kunden an, weil niemand sonst Zeit hat.
Today you have to call the customer out of necessity because no one else has time.
wohl
Wegen des Streiks muss mein Bruder wohl oder übel den frühen Bus nehmen.
Because of the strike, my brother has to take the early bus, whether he likes it or not.