Rested easier means feeling more relaxed and at ease. There are several synonyms for this phrase which includes 'slept soundly', 'rested peacefully', 'unwound comfortably', and 'refreshed well'. These terms all indicate a state of calm and restfulness after a period of sleep. They can be used interchangeably depending on the context of the sentence. For instance, you might say "I rested easier after a full night's sleep" or "I slept soundly for the first time in weeks". Whatever the words used, the message is the same - feeling rested and ready to take on the day!