Antonyms for the word "Unstrengthened" would include terms such as bolstered, reinforced, invigorated, fortified, energized, enhanced, and intensified. These words all suggest a sense of strength, vitality, and resilience, which stand in stark contrast to the weakened, depleted, and vulnerable connotations of "Unstrengthened". By employing these antonyms, speakers and writers can convey a wide range of positive emotions and attitudes, from confidence to determination to optimism. Whether used in personal or professional contexts, the antonyms of "Unstrengthened" can help express a sense of empowerment and ability to overcome challenges and achieve goals.