unsustained

adjective

un·​sustained

"+

: not sustained: such as

a

obsolete : not physically sustained or supported

b

: not kept up or supported by some aid

leaving the station feeling empty and unsustained

—S. H. Adams

unsustained any longer by loans, the business failed

c

: not kept or continued at a consistently high level

a convolution of plots makes for unsustained interest

—Current Biography

Word History

Etymology

un- entry 1 + sustained, past participle of sustain

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