Origin of chat

1400–50; late Middle English; short for chatter
Related formschat·ta·ble, adjective

Synonyms for chat

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for chat up

chat up

verb (tr, adverb) British informal

to talk flirtatiously to (a person), esp with the intention of seducing him or her
to talk persuasively to (a person), esp with an ulterior motive

chat

1

noun

informal conversation or talk conducted in an easy familiar manner
the exchange of messages in an internet or other network chatroom
any Old World songbird of the subfamily Turdinae (thrushes, etc) having a harsh chattering crySee also stonechat, whinchat
any of various North American warblers, such as Icteria virens (yellow-breasted chat)
any of various Australian wrens (family Muscicapidae) of the genus Ephthianura and other genera

verb chats, chatting or chatted (intr)

to talk in an easy familiar way
to exchange messages in a chatroom
See also chat up

Word Origin for chat

C16: short for chatter

chat

2

noun

archaic, or dialect a catkin, esp a willow catkin

Word Origin for chat

C15: from French chat cat, referring to the furry appearance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for chat up

chat

n.

1520s, "chatter, frivolous talk;" see chat (v.). Meaning "familiar conversation" is from 1570s. Chat show, for what in U.S. is a talk show, attested from 1969. Chat room in the online sense is attested by 1994, from the days when AOL ruled the Web.

chat

v.

mid-15c., "talk idly, babble," short for chatter (v.). Meaning "to converse familiarly" is from 1550s. Sense of "flirt with, ingratiate oneself with" (in later use often with up (adv.)) is from 1898. Related: Chatted; chatting.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with chat up

chat up

1

Talk flirtatiously to, as in Leave it to Charlie to chat up the girls. This usage is mostly but not entirely British. [Late 1800s]

2

Engage in light, friendly talk, as in He was soon chatting up all the board members. [Mid-1900s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.