1.NounThe fundamental set of qualities, and the range of behaviour, shared by (or believed by many to be shared by) all humans; the probabilities about thoughts, feelings, and behaviors that are typical among most humans."Some philosophers argue that there is fundamentally no such thing as human nature, but many people reject this thought for practical purposes because by human nature they merely mean predictable likelihoods about how humans can often be expected to think, feel, and behave."