When it comes to finding synonyms for the word "strained," there are several options to consider. One similar word is "tense," which suggests a feeling of stress or pressure. Another synonym is "overwrought," which implies a state of being overly anxious or worked up. "Stressed" is another option that relates to feeling a sense of strain or pressure. Conversely, the word "relaxed" is an antonym for "strained" and suggests a lack of tension or worry. Finally, "stretched" is an alternative option that refers to the idea of being pulled or extended beyond one's limits, much like when one experiences a sense of strain.