The word "laidback" is commonly used to describe someone who is relaxed, easy-going, and calm. However, there are many antonyms to the word that can be used to describe individuals with opposite characteristics. Some of the top antonyms for "laidback" include uptight, nervous, worried, anxious, high-strung, stressed, and restless. People who are uptight often have a rigid outlook on life and are easily agitated by small disturbances. Those who are anxious and worried tend to be nervous and apprehensive about things, often causing them to be on edge. High-strung individuals are usually easily irritated and tense, while those who are stressed or restless may be experiencing physical or emotional discomfort. All of these antonyms contrast with the relaxed nature commonly associated with being "laidback.