To be firm in a demand or course; refuse to yield: insisted on giving me a second helping.
To assert or demand (something) vehemently and persistently: We insist that you accept these gifts.
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.