Adhibit is a somewhat obscure word that means "to apply, administer, or affix." While it may not be a word that is commonly used in everyday conversation, there are many synonyms that can be used in its place, such as "use," "employ," "apply," "utilize," "utilise," "deploy," "implement," "exert," "exercise," "administer," "administrate," "direct," "manage," "control," and "manipulate." Each of these words carries a slightly different nuance or connotation, but all can be used to convey the basic meaning of adhibiting something or someone. So, whether you're writing a paper or having a conversation, there are plenty of options to choose from when expressing this concept.