Final answer:
The statement given is false; hyphens are not always used with proper adjectives or words ending in 'L' with the suffix '-like', but they are correctly used to join words serving as a single modifier before a noun.
Step-by-step explanation:
The statement, "Use a hyphen for the suffix like when it is added to a proper adjective or to a word that ends in L. For all other words, do not use a hyphen," is false. While it is true that hyphens are used in certain situations, there isn't a specific rule that states a hyphen is always used with proper adjectives or words ending in L when adding the suffix '-like'. Generally, hyphens are used to join words serving as a single modifier before a noun.
When considering the use of hyphens with modifiers, we should base our decision on whether the terms create a single, clear idea when combined, such as 'chocolate-covered peanuts' or a 'high-school prom-night fundraiser'. If the modifiers are not jointly describing a noun, or if they follow the noun, a hyphen is typically not used. Furthermore, a hyphen is also used to indicate possession with compound nouns and to distinguish between words that might otherwise be confusing without the hyphen.