"Strong positive" can be replaced with a variety of synonyms depending on the context of the sentence. Some examples include "firmly optimistic," "decisively affirmative," "confidently constructive," "steadfastly enthusiastic," "resolutely assertive," and "unwaveringly favorable." These synonyms emphasize the strength and positivity of the sentiment while providing a slightly different nuance or tone to the sentence. It's important to choose the synonym that best fits the intended meaning and tone of the sentence to effectively convey the desired message.