Here are 2 triple stumpers from the 9-12-2018 Jeopardy! match.

“A”, BABY! ($800) The first successful use of this technique dates to the 1700s, when Dr. John Hunter helped a couple conceive

MOVIE ROLE, TV ROLE ($2000) Henry Hill in “Goodfellas”; Matt Wozniak on “Shades of Blue”

There were 2 more in SIMILAR WORDS (the ones marked with an *).

($200) With one T, it’s the roof of the mouth; with 2, it’s a board for mixing paints
($400) As opposed to the reverse, it’s the front or heads side of a coin
($600) Pertaining to wedlock with one person at a time, & a word meaning tedious repetition
*($800) Pertaining to wedlock & pertaining to war
*($1000) Related to the word “respect” is this word for a delay that brings relief

ANSWERS: show

Today’s Daily Doubles and more information on Final Jeopardy! on Fikkle Fame’s full Daily Jeopardy! Recap