When it comes to conveying information about a particular subject, the phrase "gives lowdown on" may seem too informal for certain contexts. Synonyms for this phrase that convey a more professional tone include "provides insights into", "delivers a comprehensive overview of", "informs about", "offers a detailed explanation of", and "gives an account of". These phrases communicate the same idea as "gives lowdown on" - that the person is providing information or knowledge about a particular topic. Depending on the audience and the tone of the communication, using one of these synonyms may be more appropriate and effective.