21 Irregular Plurals Words List
| Singular | Plural |
| •Sheep | •Sheep |
| •Child | •Children |
| •Fish | •Fish |
| •Leaf | •Leaves |
| •Series | •Series |
| •Vita | •Vitae |
| •Tuna | •Tuna |
| •Knife | •Knives |
| •Quiz | •Quizzes |
| •Index | •Indices |
| •Goose | •Geese |
| •Woman | •Women |
| •Aircraft | •Aircraft |
| •Apex | •Apices |
| •Bison | •Bison |
| •Crisis | •Crises |
| •Curriculum | •Curricula |
| •Person | •People |
| •Wolf | •Wolves |
| •Man | •Men |
| •Mouse | •Mice |
