Note.—In spoonfuls the thought is of one spoon many times full.
Plural of Letters and Figures
Rule 4.—Letters and figures form the plural by adding the apostrophe (') and s; as,
| a | a's | 3 | 3's |
| w | w's | 5 | 5's |
The same rule applies to the plural of words which ordinarily have no plural; as,
Don't use so many and's and if's.
Exercise 35—Foreign Plurals
Some nouns derived from foreign languages retain their original plural. The following are in common use.
Consult a dictionary for their pronunciation and definition.