  We present a search for electron-recoil signatures from the charged-current
absorption of fermionic dark matter using the EXO-200 detector. We report an
average electron recoil background rate of $6.8 \times 10^{-4}\,
\mathrm{cts}\,\mathrm{kg}^{-1}\mathrm{yr}^{-1}\mathrm{keV}^{-1}$ above
$4\,\mathrm{MeV}$ and find no statistically significant excess over our
background projection. Using a total ${}^{136}\mathrm{Xe}$ exposure of
$234.1\,\mathrm{kg}\,\mathrm{yr}$ we exclude new parameter space for the
charged-current absorption cross-section for dark matter masses between $m_\chi
= 2.6\,\mathrm{MeV} - 11.6\,\mathrm{MeV}$ with a minimum of $6\times
10^{-51}\,\mathrm{cm}^2$ at $8.3\,\mathrm{MeV}$ at the $90\%$ confidence level.
