The word HEBM is not a known English word and therefore has no synonyms. It could be a acronym or term specific to a certain field or industry. If one were to approach the term from a phonetic perspective, there are several words that could potentially be considered synonyms such as "hem," "hemp," "him," "heaven," and "heavy." However, without further context or information about the meaning of HEBM, it is impossible to accurately provide synonyms.