The prefix “il-” alters the meaning of root words, typically signifying negation or opposition. For example, adding it to “legal” creates “illegal,” transforming the meaning from lawful to unlawful. Similar prefixes include “in-” (incapable), “im-” (immoral), and “ir-” (irregular). These variations often depend on the first letter of the root word.
Understanding these negative prefixes is crucial for vocabulary development and accurate interpretation of texts. They enable concise expression of opposing concepts and contribute significantly to nuanced communication. Historically derived from Latin, these prefixes have become integral components of the English language, enriching its expressive capabilities. Their usage has evolved over time, solidifying their place in modern English lexicon.