This trophy is titled "Drip Drip Drip" and it requires you to find the word "DRIP" in three separate puzzles.
You are able to enter the puzzle, highlight the word, and then exit the puzzle with credit toward the trophy. There's no need to complete the puzzle.
Puzzles with DRIP:
- Hospitalized on Page 1 (Drip found just left of CY on the top-right of the +.)
- Rainy Day on Page 4 (Drip found near the center. Part of TUUUDRIPF.)
- Plumb the Depths on Page 4 (Drip found diagonally in the bottom left by itself.)
The trophy will unlock immediately upon highlighting the third DRIP.