A person or thing of absolutely no consequence.
The coldest possible temperature, zero on the Kelvin scale, or approximately −273.15 °C, −459.67 °F; total absence of heat; temperature at which motion of all molecules would cease.
A person who is a nonentity.
Something of less importance than its treatment suggests.
A person or object that is bland or unremarkable in appearance or impact.
bland or unremarkable in appearance
disreputable, as of a person