Opposition maybe defined as the diagonal movement of the thumb across the palmar surface of the hand to make contact with the fingers.

In psychology, the term "opposition" refers to the act of opposing or contradicting something or someone, or the state of being opposed or in conflict. Opposition can involve opposing ideas, beliefs, or actions, and it can be expressed in a variety of ways, such as through argument, disagreement, or resistance.

Opposition is a common aspect of human behavior and is often motivated by a desire to defend one's own beliefs, values, or interests, or to challenge or change those of others. It can be an important factor in social and interpersonal relationships, and it can have both positive and negative consequences, depending on the specific context and how it is expressed.

Examples of how opposition might be relevant in psychology include: