a branch of the life studies that deals with the anatomy, physiology, biochemistry, or molecular biology of nerves and nervous tissue and especially with their relation to behavior and learning

having a tendency or inclination; being likely

bitter, sometimes violent, conflict or dissension

characterized by constant change or growth

a mood disorder marked especially by sadness, inactivity, difficulty in thinking and concentration, a significant increase or decrease in appetite and time spent sleeping, feelings of dejection and hopelessness, and sometimes suicidal tendencies

cannot be removed, washed away, or erased

describing the human anticipation of the course of events

stern and cold in appearance or manner

containing or contributing the seeds of later development

great quantity; lavish display or supply

of, relating to, being, or involving conscious intellectual activity (such as thinking, reasoning, or remembering)

the customs, arts, social systems, and achievements of a nation, people, or social group

a social but not biological way to group people, usually based on characteristics like skin color, facial features, hair texture or geographic ancestry

one's family lineage or ethnic heritage

a feeling of fellowship with others, as a result of sharing common attitudes, interests, and goals