Start a subject
To present or put forward a subject for consideration or discussion
SW: broach, bring up
We were glad you raised the subject at the meeting.
To begin to talk about a subject
I hate to bring this up, but you still owe me $100.
To begin talking about a subject that is difficult to discuss, especially because it may be embarrassing or unpleasant or cause an argument
I was dreading having to broach the subject to my manager.
Get onto something
To begin talking about a subject
We got onto the subject of the conference.
A subject comes up / arise
People begin talking about the subject.
The subject of project never came up.
Change the subject
To begin talking about something different
I tried to change the subject.
To present something for consideration or discussion
I introduced several issues during the meeting.
To offer something for other people to consider or judge
I am presenting the report at the meeting.
To suggest an idea, plan, proposal, etc. for consideration or discussion
I put forward a few suggestions about the Christmas party.
To put forward an idea, a plan, or an action for other people to consider
I suggested an Indian restaurant near the subway station for the party.
To put forward a plan, idea, action, etc. for other people to consider
Several politicians have proposed raising the tax.
To suggest an idea, plan, etc. for people to consider
I put forth some alternatives.
To suggest an idea, a theory, or a plan for other people to consider or discuss
Many ideas were advanced and rejected.