The Oxford English Reference Dictionary defines one interpretation of a sentence as: "A set of words complete in itself as the expression of a thought, containing or implying a subject and a predicate, and conveying a statement, question, exclamation, or command." Without getting into the details, for explanatory purposes, the Oxford English Reference Dictionary defines:
- A subject as: "Any noun, or its equivalent, about which a sentence is predicated and with which the verb agrees." Example: Jane went home. ("Jane" is the subject).
- A predicate as: "What is said about the subject of a sentence." Example: Jane went home ("...went home" is the predicate).
- A verb as: "A word used to indicate an action, state or occurrence forming the main part of the predicate of a sentence." Example: Jane went home ("went" is the verb).
However, just like life, over time, language evolves. Writing and speaking are only two forms of communication - with the intention that others can understand, maintain interest and benefit in some way from what you're saying.
So you can adopt the same view of many current authors and use a single word in a sentence, IF you consider your writing can be improved by the action.
Want To Make Your Point, Fast?
One-word sentences - when carefully crafted - can create impact like nothing else - and that's where the real value lies.
Yes really; an entire "sentence" can (loosely) be made up of only a single word - if you want to achieve a particular effect or make a powerful, dramatic statement.
Sometimes, in writing, speaking or presenting, less can achieve more.
However, the key to success here is to choose your word or phrase carefully to create the right impact and achieve the effect you want.
Although grammatically, one-word sentences may be frowned upon by purists, as "poor writing" or "lazy thinking", I suggest that you should decide for yourself and don't feel intimidated without any valid foundation.
Remember to never be afraid to experiment with the sheer fun of "breaking the rules."