To refuse to allow: "[The government] disallowed his aging and dying parents any reunion with their only child” ( John Simon). (verb-transitive)
To reject as invalid, untrue, or improper.(verb-transitive)
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.
Use "disallow" in a sentence
"Of course I might not get the point I can almost assure you that whether to exempt admins from the username disallow was never considered, so it is neither oversight nor bug."
"Of course, any site can shut down the indexing of its content by Google any time it wants with a simple "disallow" in its robots. txt file."
"Sen. Lisa Murkowski, Republican of Alaska, convinced Sen. Harry Reid that there should be a vote to "disallow" the Environmental Protection Agency's scientific finding that global warming represents a danger to human health."