There are several synonyms for the phrase "acquire knowledge", and it's important to know them in order to diversify your vocabulary and make your writing and speaking more interesting. Some of the synonyms for "acquire knowledge" include: gain knowledge, collect information, learn about something, absorb information, grasp new ideas, attain understanding, increase one's comprehension, and broaden one's horizons. Using these different synonyms can help you to convey a more precise and nuanced meaning, depending on the context in which they are used. Additionally, a varied vocabulary is a great way to improve your overall writing and communication skills.