Stop word completion in LibreOffice on Debian Linux

Sometimes, I was sorry to find that the word completion or autocompletion feature in LibreOffice made me annoyed. The word completion feature guessed what I wanted to type and let me press enter to have the whole word. Sometimes or usually, the guess was wrong. When I hit enter accidentally, I got the wrong word.

I decided to stop that by pressing:

Tools -> AutoCorrect Options... -> Word Completion

-> uncheck Collect words

-> uncheck Enable word completion

-> OK