When you add -ty or -ity to end the word meaning?

You're asking about suffixes that change words into adjectives. Here's a breakdown of how -ty and -ity are used:

-ty

* General Use: Often added to nouns to form adjectives describing a *quality* or *characteristic* associated with that noun.

* Examples:

* happy (from the noun "hap")

* dirty (from the noun "dirt")

* salty (from the noun "salt")

-ity

* More Formal: Frequently used to form adjectives from nouns, especially those of Latin origin.

* Meaning: Often implies a *state*, *condition*, or *quality*

* Examples:

* ability (from the noun "able")

* activity (from the noun "active")

* sanity (from the noun "sane")

Important Notes:

* Spelling Variations: Sometimes, the ending changes slightly depending on the base word. For example:

* safe - safety

* real - reality

* Not Always Adjectives: While both suffixes primarily create adjectives, some words with -ty or -ity are actually nouns (like "entity" or "entity").

Let me know if you have any other word-building questions!