One sign of a possible problem is a change in the color of the toenail. Discoloration of the toenails may be due to a variety of reasons. Once the underlying cause is determined, treatment can be administered to restore normal color to the nail. A fungal infection causes a toenail to become discolored. The nail usually turns a dark color from dirt or debris that has become trapped underneath the nail. Other symptoms of fungal infection include a foul smell, thickened nail, crumbled nail or a dull toenail that is misshapen.
Definition of affirm for English Language Learners. : to say that something is true in a confident way. : to show a strong belief in or dedication to (something, such as an important idea)
affirming the consequent. Affirming the consequent (AC) is a formal fallacy, i.e., a logical fallacy that is recognizable by its form rather than its content. AC has the form: If p then q. q. So, p. p and q represent different statements. A statement with the form if p then q is called a conditional statement. p is called the antecedent and q is called the consequent of the conditional statement. Arguments with the form AC are fallacious because they are invalid.