Questions & Answers about Я растерялся и не сразу нашёл нужные слова.
The verb is растеряться, which means to get flustered, to become confused, or to lose one’s composure.
The ending -ся is the reflexive marker. In this verb, it does not mean something literally like to lose oneself word-for-word in modern usage. It is simply part of the dictionary form растеряться.
So:
- растерялся = got flustered / became confused
- dictionary form: растеряться
This is a very natural verb in Russian for a moment when someone suddenly does not know what to say or do.
Because these are two different verbs:
- растерять = to lose / misplace / scatter
- растеряться = to become confused / flustered
So:
- Я растерялся = I got flustered
- Я растерял слова would sound like I lost the words in a much more literal sense, not the natural meaning intended here.
The -ся changes the verb into a different lexical item with a different meaning.