simple past tense and past participle of relax
"The musician relaxed his grip on the bow before playing again."
In plain English: To relax means to let your muscles and mind stop being tense so you feel calm again.
"He plans to relax after such a long day at work."
without strain or anxiety
"gave the impression of being quite relaxed"
"a relaxed and informal discussion"
Made slack or feeble; weak, soft.
"The old man's relaxed jaw made it difficult to hear his words over the noise of the crowd."
In plain English: Relaxed means feeling calm and not worried about anything stressful.
"She sat in her favorite chair and read while feeling completely relaxed."
The word relaxed comes from the verb relax plus the past tense suffix -ed. It is ultimately derived from the Latin word relaxatus.