Definition of "hit-and-miss" []

• Sometimes succeeding and sometimes not. (adjective)

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.

• "There's a sprinkling of giant bosses and the game is shot through with hit-and-miss humour."
• "And people in Oceanside, on New York's Long Island, learned a lesson that is becoming all too familiar: Inflatable amusement rides — with their hit-and-miss regulation and a lack of industry-wide standards — can endanger lives when not properly installed or operated."
• "The simplest type is called “hit-and-miss” integration, which employs random samples to reflect the system as a whole."