What is what language is most similar to english?

The language that is most similar to English is probably Dutch. This is because Dutch shares many similarities with English in terms of vocabulary, syntax, and grammar. Both English and Dutch belong to the Germanic branch of the Indo-European language family, and they share a number of cognates (words that have similar meanings and origins). For example, the English word "father" is "vader" in Dutch, and the English word "water" is "water" in Dutch. Both English and Dutch also have similar word order and grammatical structures, making it relatively easy for English speakers to learn Dutch.