Irregular Plural Nouns
Singular or Plural
-s or -es
Singular or Plural in Meaning
Plural Compound Nouns
100

index - __________

indices

100

(sandwich) They ate lots of _______. 

sandwiches

100

radio

radios

100

Politics

singular

100

homework

homeworks

200

True or False - ox - oxen

true

200

(watch) He has a nice ________.

watch

200

echo

echoes

200

scissors

plural

200

alarm clock

alarm clocks

300

fungus - _________

fungi

300

(witch) I saw a witch at the Halloween party, but he saw seven ______.

witches

300

video

videos

300

pants

plural

300

dining room

dining rooms

400

True or False - mouse - mice

true

400

(leech) Ewww! Look at those __________!

leeches

400

hero

heroes

400

news

singular

400

toothbrush

toothbrushes

500

True or False - tooth - teeths

false

500

(peach) That was one big _________!

peach

500

zero

zeroes

500

Mathematics

singular

500

lady-in-waiting

ladies-in-waiting

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