The Clue "If only that were true!"
The Answer IWISH
The phrase "If only that were true!" expresses a desire for something to be real or different from what it is. The answer "IWISH" captures this feeling perfectly, as it directly reflects the longing or hope for a different situation. When we say "I wish," we are often wishing for something that isn't currently true. This makes "IWISH" a fitting response to the clue.