Usage using-directives for namespaces and using-declarations for namespace members using-declarations for class members Synonyms for USING: utilizing, applying, exploiting, employing, harnessing, operating, exercising, making use of; Antonyms of USING: ignoring, neglecting, misusing, misapplying Useing or using? Learn the correct spelling, grammar rule, examples, and usage in British and American English clearly. USING definition: present participle of use. See examples of using used in a sentence. use, employ, utilize mean to put into service especially to attain an end. use implies availing oneself of something as a means or instrument to an end. employ suggests the use of a person or thing that is available but idle, inactive, or disengaged. utilize may suggest the discovery of a new, profitable, or practical use for something. Using a colon after “such as,” “including,” “especially,” and similar phrases. This violates the rule that the material preceding the colon must be a complete thought. The manner of using; usage: learned the proper use of power tools. 3. a. The permission, privilege, or benefit of using something: gave us the use of their summerhouse. b. The power or ability to use something: lost the use of one arm. 4. The need or occasion to use or employ something: I have no use for these old clothes. 5. Meaning of using in English using present participle of use (Definition of using from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press) Meaning of using in English using present participle of use (Definition of using from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press) “Using” is the correct form, while “using” is not a real word. Knowing the right spelling is important, especially in writing emails, homework, or social media posts. We’ll explain the difference between “using” and “useing,” provide easy examples, and give tips to remember the correct spelling.