Final answer:
The prefix meaning below or under is 'sub-'. It's used to form words that indicate a position of lower status or location beneath something, like 'submarine'. Understanding English prefixes is key to vocabulary development.
Step-by-step explanation:
The prefix meaning below or under is sub-. This prefix is often used in English to form words that indicate something is beneath, of lower status, or of lesser importance than something else. For example, submarine, which operates under the water, or subordinate, implying a lower rank or position.
Understanding the use of prefixes can greatly expand a student's vocabulary and comprehension of the language. Prefixes like sub- are fundamental building blocks in the formation of many words, helping to convey complex meanings and nuances. Other related prefixes include under- as in underground, and com-, ex-, non-, over-, and counter- as in counterproductive.