The phrase "give of" can be replaced with several synonyms depending on the context the phrase is used in. For example, in the case of charitable giving, "donate" can be used instead. In the case of sharing knowledge or expertise, "impart" could be a suitable synonym. Alternately, when describing a person who is expending a lot of effort or energy, "exude" or "radiate" could work well as synonyms. Additionally, if describing the release of a scent or fragrance, "emit" or "exude" would be appropriate. Ultimately, the context of the situation will determine the best synonym for the phrase "give of" to use.