Answer:

retentive

Answer	Crossword Clue
RETENTIVE	Having a good memory
RETENTIVE	Clinging
RETENTIVE	Having a good memory.

RETENTIVE	Good, as a memory.
RETENTIVE	Tenacious.
RETENTIVE	Having good memory

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.