There are various synonyms that can be used for the term "just right." For instance, the phrase "perfectly suitable" can be used to describe something that is just right and meets all the necessary requirements. The term "ideal" can also be used to describe something that is perfectly appropriate and suitable for a particular situation. Another synonym for "just right" is "adequate," which means that something is sufficient in meeting the required standards. You can also use "optimal" to describe a situation or thing that is perfectly suited to what is needed or expected. Other synonyms for "just right" include "fitting," "appropriate," "apt," "precise," and "exact".