What term describes occasional consumption of a substance without clinical manifestations?

The term that describes occasional consumption of a substance without clinical manifestations is "use." This indicates that the individual engages with a substance in a way that does not lead to negative consequences or addiction. In this context, "use" is typically associated with a lifestyle that allows for moderation rather than excessive consumption that could lead to problematic behavior or health issues.

Other terms, such as abuse, dependence, and tolerance, imply a level of issues associated with substance consumption. Abuse refers to the problematic pattern of use that leads to significant impairment or distress, while dependence indicates a physical or psychological reliance on the substance. Tolerance is the body's adaptation to a substance over time, leading to reduced effects with the same amount or a need for increased amounts to achieve the same effect. Therefore, "use" stands out as the appropriate term for consumption that remains within safe and manageable limits without adverse outcomes.