plan is one of the 1000 most common headwords. place - plan - play Pronunciation IPA (key): /plæn/ or [pʰl̥æn] Audio (US)(file) Noun Singular plan Plural plans (countable) A plan is a clear idea of what you will do, often for a particular goal. Have you made any plans for tomorrow? The school has announced a plan to open two new classrooms. Buying the new factory is part of our growth plan. (countable) A plan is a technical drawing of a room, a building, a city, etc. The plans show this area as housing, with no shopping nearby. Synonyms schedule decision Verb Plain form plan Third-person singular plans Past tense planned Past participle planned Present participle planning (transitive & intransitive) If you plan something, you decide what you will do. We need to plan ahead so that we'll be ready. We planned out the wedding very carefully. I didn't plan to be here, but John asked me to come. When do you plan on starting the new job? Synonyms think decide Related words plannerWikiwand - on Seamless Wikipedia browsing. On steroids.