Myriads is a word that represents a large, indeterminate number or multitude. However, there are various synonyms for this word that can be used interchangeably to add variety and depth to your writing. Some synonyms for myriads are abundance, countless, multitude, plentiful, numerous, copious, and infinite. Similarly, you can also use other phrases like a vast array, a plethora, endless, profuse, or a sea of to convey the same meaning as myriads. These synonyms can be particularly useful when writing essays, articles, or other literary pieces that require a more colorful and engaging vocabulary.