Encountering the phrase "is in a title" often triggers a specific question about grammatical precision, particularly when you are preparing a document for publication. Should i capitalize is in a title depends heavily on the style guide you are following and the grammatical role the word plays within the sentence. In title case, short conjunctions and articles are usually lowercased, but the verb "is" is treated differently because it functions as a main verb, not a decorative connector.
Understanding Title Case Rules for Verbs
Most major style guides, including The Chicago Manual of Style and APA style, dictate that principal words in a title should be capitalized. This category includes nouns, verbs, adjectives, and adverbs. Because "is" is a form of the verb "to be," it falls squarely into this category and should be capitalized when you are using title case. The confusion often arises because people see the word as short or assume it functions like the word "and," but grammatically it carries the weight of the predicate.
The Difference Between Title Case and Sentence Case
Another reason the question "should i capitalize is in a title" arises is the mix-up between title case and sentence case. In sentence case, you only capitalize the first word of the title and any proper nouns, leaving "is" lowercase. However, if you are specifically asking about title case, which is common in newspaper headlines, book covers, and academic papers, the verb must be capitalized. This visual distinction immediately signals a shift in formality and structure to the reader.
Title Case: The Sky Is Blue
Sentence Case: The sky is blue
Exceptions and Style Guide Variations
While the verb "is" is generally capitalized, there are nuances regarding style guides. The Associated Press (AP) style, often used in journalism, has specific exceptions regarding capitalization. However, even in AP style, major verbs are typically capped unless they are overly short conjunctions or articles. Therefore, unless you are strictly adhering to a highly specific in-house style that treats all verbs as lowercase, "is" usually maintains its uppercase form in titles.
Why Capitalization Matters for Clarity
Ignoring the rule of capitalization for verbs like "is" can muddle the readability of your headline. Capital letters create a visual hierarchy that guides the eye across the title efficiently. If you arbitrarily lowercase a key verb, the reader might pause or stumble, trying to decipher if it is a linking verb or a decorative element. Proper capitalization ensures that the grammatical structure of the title is immediately apparent, enhancing the professionalism of your work.
