Undesirable or harmful.
Of a totally fictitious issue printed for collectors, often issued on behalf of a non-existent territory or country (not to be confused with forgery, which is an illegitimate copy of a genuine stamp).
Counterfeit or fake; not genuine.
Based on false or misleading information or unjustified assumptions.
Incorrect, useless, or broken.
A liquor made of rum and molasses.
Serving to hinder or oppose; adverse, disadvantageous, inconducive, unsuitable.
Of wind or weather: causing delay or obstacles; not conducive to travel or work; inclement.
Of a belief, state of mind, etc.: not favourable; disapproving.
Not auspicious; ill-boding.