S1U1B3C3O1N1T1R1A1R1I1E1S1
17 points
SUBCONTRARIES is validvalid
SUBCONTRARY, [n]
SUBCONTRARY, a proposition so related to another that though both may be true they cannot both be false [n]
SUBCONTRARY, [n]
SUBCONTRARY, a proposition so related to another that though both may be true they cannot both be false [n]