- -tion
- -ism
- -ity
- -ment
- -ness
- -age
- -ance
- -ence
- -ship
- -ability
- -acy
Formation of abstract nouns
In many cases, these nouns are derived by adding a suffix or alteration to the root word. Child is a concrete noun, for example, but childhood is an intangible state, so it is abstract.
Nouns with the following suffixes are often abstract: