The crossword solution for the term SUFFIX WITH STOCK OR BLOCK is ADE, which is a three-letter suffix. This suffix is commonly used to form nouns from other words, and it is often used to refer to a person or thing associated with a particular place, activity, or quality. For example, 'New Yorker' is formed from the word 'New York' by adding the suffix '-ADE'. It can also be used to refer to a large quantity of something, such as a 'BLOCKADE' or a 'STOCKADE'.