listless

adjectives

lacking zest or vivacity
"he was listless and bored"
listless
is derived from
listlessness
is derived from
listlessness
is similar to
deficient in alertness or activity
"bullfrogs became lethargic with the first cold nights"
lethargic, unenrgetic
marked by low spirits; showing no enthusiasm
"a dispirited and divided Party"; "reacted to the crisis with listless resignation"
dispirited, listless
is derived from
listlessness