An "infinitive" in English is a verb preceded by the word to, as in to study. Many English verbs can be followed by a grammatical structure that contains an infinitive and is known as an "infinitive ...
Infinitives are verb stems. In the English language, infinitives always consist of the word "to" plus a verb. (The "to" can come before or after the verb.) For example: I love to run. We want to eat.
When you look up a verb in the dictionary what you find is the verb in the infinitive form. In English it’s two words - ‘to swim’ - but in German it’s just the one schwimmen. In German ...