• chatlines,
• catline,
• chatline,
• xhat line,
• vhat line,
• fhat line,
• dhat line,
• cgat line,
• cbat line,
• cnat line,
• cjat line,
• cuat line,
• cyat line,
• chzt line,
• chst line,
• chwt line,
• chqt line,
• chaf line,
• chag line,
• chay line

The adjective form of the phrase "chat line" is "chatline" (written as one word).

The plural of the "chat line" can be the "chat lines".

The singular of the "chat line" can be the "chat line".