Radical 口

7 strokes

mouth 口 (5) + wait for 巴 (368a) = suggestion 吧

This is a particle put at the end of a sentence to indicate a suggestion or a supposition. 吧 is also used for its sound, often with 1st tone, as in the following compound.

[酒吧 (102) jiǔbā bar (a place serving drinks)]

You open your mouth and wait for the dentist to start work, but instead he says, “I have a suggestion. / Perhaps you’d like to try my robot assistant — he can do this work at a bargain price.”

This means “to wait for” but also “to hope for”.