"Be welcome" is a phrase that is often used to express hospitality and friendliness towards someone. However, there are many other synonyms that can be used to convey the same sentiment. Some of the common synonyms include "feel at home," "make yourself comfortable," "come in," "be my guest," "have a seat," "join us," "be our guest," and "be our welcome guest." All of these expressions are used to make someone feel invited and comfortable in a new environment. They are perfect for greeting guests, customers, or anyone who is visiting your home or workplace for the first time.