Final answer:
The suffix that denotes resemblance is '-oid', used to create words like 'asteroid' and 'humanoid', indicating something that is similar in shape or form to something else.
Step-by-step explanation:
The suffix that means resembling is -oid. This suffix can be attached to various words to indicate similarity in shape or form. For instance, the word asteroid means resembling a star (astro- meaning star), where aster comes from the Greek word for star, and -oid indicates a shape or form that is similar to something else. Other examples include humanoid, meaning resembling a human, and android, which means resembling a man. Understanding how suffixes operate will notably expand your vocabulary and grasp of English morphology.
Suffixes can dramatically change the meaning of the base word and can also alter the part of speech it belongs to. Throughout English, you will encounter various suffixes like -ly (which often turns adjectives into adverbs), -ness (which turns adjectives into nouns to denote a state or quality), and -ment (which turns verbs into nouns to indicate the means or result of an action).
When learning English suffixes, it's important to also understand the spelling changes that might occur when they're added to words. For instance, changing the verb die to the noun dying involves changing the y to an i before adding the -ing suffix. Moreover, the suffix -ed can have different pronunciations depending on the ending sound of the base verb, such as [d], [id], or [t]. These nuances highlight the complexity of English spelling and pronunciation rules.