Words with -able and -ible

Key Notes:-

1. Basic Rule for Usage

• -able: Generally used when the root word is a complete English word.
• Example: “agree” + “-able” = “agreeable”
• -ible: Typically used when the root word is not a complete English word or comes from Latin.
• Example: “access” + “-ible” = “accessible”

2. Meaning and Function

• Both suffixes form adjectives.
• They generally mean “capable of,” “worthy of,” or “suitable for.”

3. Spelling Patterns

• If the root word ends in “e”, often drop the “e” before adding -able.
• Example: “desire” + “-able” = “desirable”
• For words ending in a consonant, just add -able or -ible.
• Example: “horr” + “-ible” = “horrible”
• Words ending in a soft “c” or “g” usually take -able.
• Example: “change” + “-able” = “changeable”

4. Exceptions and Irregular Forms

• Some words do not follow the general rules and must be memorized.
• Example: “digest” + “-ible” = “digestible”

5. Usage Tips

• If unsure, check a dictionary as both suffixes have many exceptions.
• Words ending in -able often come from words that are verbs or adjectives.
• Example: “accept” + “-able” = “acceptable”
• Words ending in -ible often come from Latin and can sometimes change form when the suffix is added.
• Example: “audire” (Latin) + “-ible” = “audible”

6. Common Examples

• -able: adaptable, enjoyable, predictable, reliable, remarkable
• -ible: accessible, convertible, comprehensible, flexible, possible

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