Speak Of The Devil has these relationships to other tropes:

parents kids shares a parent with:
Be Careful What You Say
parent child
Be Careful What You SayBe Careful What You Wish For
''The Promise
''I Know Your True Name
''Black Speech
''Words Can Break My Bones
''Threat Backfire
''Tempting Fate
''The Scottish Trope
You'll need to Get Known if you want to add or modify these relationships.