There are several studies that claim that 1000 most used words in a foreign language help you understand 75% of common communication. Czech-based Flashcard app Vocabulary Miner asked 181 language lecturers whether they think it is true. This is a word list of 5000 most used Czech (český) words based on contents of www.opensubtitles.org. The list has only been cleaned to an extent and it is possible that you might find English entries - as it is based on movie subtitles. The words are all in lower case (if applicable) to avoid duplicate entries.
101-150: 1000 Most Common Czech Words ; Most common (US) English words to Czech ; Most Frequent Czech Words ; Most Frequent Czech Verbs

The 1000 most frequent words account for around 80% in spoken communication. This is true of virtually all natural languages. Czech currently has approximately 350.000 words. You should learn the most common words first. Of the 350,000 words, only a fraction is required to fluently use them. Download the 100 most commonly used Czech words for free.

The 200 most common words in the Czech language, The Czech words have audio, generated with Google Cloud Text-to-Speech. Sample (from 196 notes) czech_word: zpátky gender: ipa [ˈspaːtkɪ] translations: back, backwards (to a previous condition or place) id: 146: Tags: czech_word: když gender: ipa /ɡdɪʃ/ translations:
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1000 most common czech words