* For "is" as a form of the verb "to be": This often translates to is (pronounced roughly "ish"), but the form changes depending on the subject and tense. For example:
* Is mise: I am
* Is tusa: You (singular) are
* Is e: He/It is
* Is i: She/It is
* Is sinn: We are
* Is sibh: You (plural) are
* Is iad: They are
* For "is" as a part of a relative clause (e.g., "the man who is tall"): This would usually be incorporated into the relative clause construction, with no direct equivalent of "is". The relative pronoun itself would carry the meaning.
* For "is" as a linking verb (e.g., "The sky is blue"): Again, this would be incorporated into the verb conjugation, with the adjective taking the appropriate form to agree with the subject. "The sky is blue" would be something like "Gorm a' bhàn" (Blue is the sky).
Therefore, you need to provide the full sentence to get an accurate translation. Just saying "is" is insufficient.