Isolating grammar refers to a language structure wherein words are formed by single, free-standing units with very little inflection or alteration. It means that each word carries its own meaning without the need for prefixes, suffixes, or other affixes. Some of the synonyms for isolating grammar include analytic grammar, faithfulness to form, fusional grammar, and isolationism. With analytical grammar, words are composed solely of base elements without adding any inflection. Fusional grammar, on the other hand, uses inflections to change the meaning of words. Lastly, isolationism is a synonym for isolating grammar, which emphasizes the lack of considerable change implemented to base words.