"Give by" is a commonly used phrase to describe the act of providing something to someone. However, there are various synonyms that can be used to convey the same meaning. For instance, "offer up" is a great alternative. It suggests a voluntary act of giving, rather than someone being forced to do so. Another synonym is "contribute". This word emphasizes the collaborative nature of giving. "Donate" is also another useful synonym that implies giving something valuable or important. "Provide" is another excellent choice that can encompass the act of giving or supplying something. "Grant" is also a synonym that can be used to suggest giving out something important or deserving.