Adjective → Noun: Regular & Irregular Forms

Learn how to form nouns from adjectives! Some follow regular rules (like adding -ness), but others are irregular or have special spelling changes.

Adjective	Regular Noun	Irregular Noun / Example	Type / Note
happy	happiness	–	y → i + ness
lazy	laziness		regular -ness
crazy	craziness		regular -ness
busy		Business – buying/selling goods 👉 „She runs her own business.“	different meaning than „busyness“
busy	Busyness	= being busy, lots of work 👉 „Her busyness kept her up all night.“	irregular spelling
If the adjective is one syllable and ends in Y, we usually keep the Y
shy	shyness		y → + ness
dry	dryness		regular -ness
sly	slyness		regular -ness
wry	wryness	👉 „A wry smile spread across his face.“	means ironic or twisted
dark	darkness	–	regular -ness
kind	kindness	–	regular -ness
strong		strength	different root word
deep		depth	different root word
wide		width	different root word
long		length	different root word
poor		poverty	not „poorness“ – irregular noun
good	goodness	also: virtue	both are used

 

Complete the sentences with the correct noun form of the word in brackets. Pay attention to regular and irregular patterns.

1. Her _________ (kind) to strangers is admirable.
2. He responded with a __________ (wry) that made everyone laugh.
3. The _________ (strong) of the storm surprised the entire town.
4. They appreciated his __________ (good) and generosity.
5. Due to her extreme __________ (busy), she forgot the meeting.
6. We were impressed by the __________ (deep) of his knowledge.
7. Their __________ (lazy) was obvious during the group project.
8. The __________ (long) of the journey exhausted them.
9. She acted with __________ (sly), trying to hide the truth.
10. His __________ (crazy) was part of his charm.
11. The room was filled with _________ (dark) after the power outage.
12. Her unexpected __________ (kind) helped me get through the day.
13. The __________ (wide) of the river makes it difficult to cross.
14. We must address global __________ (poor) and inequality.
15. The __________ (dry) of the desert made travel difficult.

answer key: 

1. kindness 2. wryness 3. strength 4. goodness 5. busyness 6. depth 7. laziness 8. length 9. slyness
2. craziness 11. darkness12. kindness 13. width 14. poverty 15. dryness