Conjunction/kənˈdʒʌŋkʃn/ Definition 1 of 4Pro Tip 1/3Joining Concepts Conjunctions connect ideas, making complex or compound sentences. I'm hungry, so I will eat. Pro Tip 2/3Flow of Ideas Use conjunctions to give your writing a smooth, logical flow. She was late because the traffic was terrible. Pro Tip 3/3Avoid Excessive Use Overusing conjunctions can make sentences run-on. Use them sparingly. I went home and slept and dreamt.