(informal) in no time, in two shakes, in a flash, in a jiffy

to talk for the sake of talking, to waffle, to blow smoke

where there's a will, there's a way

(transitive with à) (informal) not to look good, not to bode well

(informal) and how! and it's an understatement!

Alternative spelling of à cœur vaillant rien d'impossible

to have nothing (i.e. no decent or elegant clothes) to put on

to make small talk, to chit-chat

there is nothing new under the sun

(colloquial, often ironic, sarcastic) Indicates that one does not want to impose one's opinion; just saying