Breakdown of Kaçmak için aniden bir dürtü hissetti.
bir
a / an
kaçmak
to run away
hissetmek
to feel
için
for
Questions & Answers about Kaçmak için aniden bir dürtü hissetti.
Why does the sentence use kaçmak için instead of a noun compound like kaçma dürtüsü?
Both are perfectly natural! Kaçma dürtüsü uses the short infinitive (-ma) to create a set noun compound meaning "urge of escaping" or "flight response." The sentence's version, kaçmak için bir dürtü, uses the full infinitive (-mak) plus için to express purpose: an urge in order to run away. It feels slightly more descriptive of the specific moment.
How could we add this lesson's topic, kendi kendine, to this sentence to emphasize that the urge arose completely on its own?
Does moving aniden (suddenly) to the beginning of the sentence change the meaning?
Slightly. Word order in Turkish emphasizes whatever comes just before the verb. Here, aniden immediately precedes the object/verb block, stressing that the feeling of the urge was sudden. If you say Aniden kaçmak için..., it's still correct, but it groups "suddenly" closer to "running away," potentially making it sound like the escape itself was going to be sudden.
Just as a refresher, why does the verb hissetti have a double "s"?