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What is the plural of the word 'Tooth'?
A. Tooths
B. Teeth
C. Toothes
D. Teeths
Correct Answer Is Option = Teeth
Notes / Explanation
The plural of the word tooth is teeth, and this is an example of what is known in English grammar as an irregular plural, the study of which is an important part of mastering the language for competitive examinations. In English, most nouns form their plural in a regular way, usually by adding a particular ending to the singular form, so that one book becomes two books and one chair becomes several chairs. However, a number of common words do not follow this regular pattern and instead form their plurals in special ways that must be learnt individually, and the word tooth is one of these irregular nouns. Instead of adding the usual ending, the word changes its internal vowels to form the plural, so that the single form tooth becomes the plural form teeth. This kind of plural, in which the spelling and sound of the middle of the word change rather than an ending being added, is found in a small group of old and frequently used English words. Other examples of the same kind of change include the word foot, which becomes feet in the plural, and the word goose, which becomes geese, showing a similar pattern of vowel change. There are also other types of irregular plurals in English, such as words that change in different ways, like man becoming men and child becoming children, and a few words that remain the same in both the singular and the plural, such as sheep and deer. Because these irregular plurals do not follow the usual rule, they cannot be worked out simply by applying the regular pattern, and they must be remembered as they are. Learners of English need to give special attention to these irregular forms, because using the regular pattern by mistake, and saying a form such as tooths instead of teeth, is a common error. A good knowledge of irregular plurals is important for writing and speaking correctly. In examinations, candidates are often tested on their knowledge of these forms. For PPSC and other competitive examinations, the key points to remember are that the plural of tooth is teeth, that this is an irregular plural formed by a change in the vowels rather than by adding an ending, that similar changes occur in words such as foot and goose, and that irregular plurals must be learnt individually because they do not follow the regular rule.
