v. lu·bri·cat·ed, lu·bri·cat·ing, lu·bri·cates
1. To apply a lubricant to or make slippery: She lubricated the bike chain.
2. To facilitate or make easier: tried to lubricate the relations between ambassadors.
3. To cause to feel cheerful and sociable by the consumption of alcohol: I waited until he was lubricated to tell him the news.
To act as a lubricant.
[Latin lūbricāre, lūbricāt-, from lūbricus, slippery; see sleubh- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.