The word 'paralytical' means causing paralysis or sudden incapacitation. There are several synonyms for this word that you can use to convey similar meanings. For instance, you can use the words 'debilitating', 'crippling', 'enervating', 'devitalizing', 'enfeebling', 'crippling', 'devastating', or 'disabling' to describe something that paralyzes. In some contexts, words like 'immobilizing', 'stagnating', 'lethargic', 'sedentary', or 'inactive' can be used to express the idea of being physically or mentally paralyzed without necessarily causing paralysis. Regardless of the synonym used, remember to choose the word that fits the context and clearly conveys the intended meaning.