  We propose a simple extension of the Standard Model (SM) which has a viable
dark matter (DM) candidate, as well as can explain the generation of tiny
neutrino masses. The DM is an electroweak (EW) singlet scalar $S$, odd under an
imposed exact $Z_2$ symmetry, interacting to SM through `Higgs-portal'
coupling, while all other particles are even under $Z_2$. The model also has an
EW isospin $3/2$ scalar, $\Delta$ and a pair of EW isospin vector, $\Sigma$ and
$\bar{\Sigma}$, responsible for generating tiny neutrino mass via the effective
dimension seven operator. Thanks to the additional interactions with $\Delta$,
the scalar singlet DM $S$ survives a large region of parameter space by relic
density constraints from WMAP/PLANCK and direct search bounds from updated LUX
data. Constraints on the model from Large Hadron Collider (LHC) has also been
discussed.
