The phrase "thing with feathers" is famously used in Emily Dickinson's poem "Hope is a Thing with Feathers". While "hope" may be the most common synonym for this phrase, there are many other possibilities. One option is "optimism", which also suggests a positive outlook in the face of difficulty. Another option is "faith", which can denote belief in oneself, others, or a higher power. "Encouragement" is a more active synonym, implying support or motivation to carry on through challenges. "Inspiration" also fits this description, suggesting a spark of creativity or passion that propels us forward. Ultimately, the phrase "thing with feathers" can be applied to any emotion or feeling that lifts us up and carries us through tough times.