someone can’t say (something)
 can’t say fairer than that
 go without saying (that)
 have something to say to someone/about something
 have something/a lot/nothing etc. to say for yourself
 having said that
 if I may say (so)
 I must say (that)
 I wouldn’t say no (to something)
 I’ll say
 (just) say the word
 not to say
 say it all
 say a lot/very little etc. for
 say no more
 say this/that for someone
 say something to yourself
 say what?
 say what you like (about)
 say when
 say your piece
 shall I/we say
 that is to say
 that said
 that’s/it’s easier said than done
 that’s not saying much
 that’s not to say (that)
 there’s something/a lot/not much etc. to be said for something
 though/if I say it myself
 to say the least
 to say nothing of
 what do you say I/we do something?
 what have you got to say for yourself?
 what someone says goes
 what would someone say to something?
 when all is said and done
 who can say?
 who says?
 who’s/what’s to say (that)?
 you can say that again
 you don’t say
 you said it