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Related to kiss up: kiss up to someone
slang To habitually offer flattery in the hope of gaining favor; to behave sycophantically. Stop kissing up just to try to get an A. Just study like everyone else.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
To praise or flatter someone excessively in order to gain his or her favor: You'll get the job if you kiss up enough. Stop kissing up to them and tell them what you really think.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.