A person who uncritically or habitually conforms to the customs, rules, or styles of a group.
Marked by conformity or convention: "Underneath the image, teenagers today are surprisingly conformist” ( Selina S. Guber).
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.