The term "applicable" has various synonyms in the English language. Some of the most commonly used synonyms for "that is applicable" include "relevant," "pertinent," "suitable," "appropriate," "usable," and "practical." All these words are used to describe something that is appropriate or relevant for a particular purpose or situation. "Relevant" is used to describe something that is directly related to a particular topic or subject. On the other hand, "pertinent" refers to something that is relevant to a particular situation or circumstance. Likewise, "suitable" refers to something that is appropriate or fitting for a particular purpose, while "practical" refers to something that is useful and can be directly applied.