feel blue
Be depressed or sad, as in I was really feeling blue after she told me she was leaving. The use of blue to mean “sad” dates from the late 1300s. See also blue funk, def. 2; have the blues.
Words nearby feel blue
feedstuff,
feedthrough,
feedwater,
feel,
feel bad,
feel blue,
feel for,
feel free,
feel in one's bones,
feel like,
feel like death