Answer:

igoofed

Answer	Crossword Clue
IGOOFED	"My bad"
IGOOFED	Admission of error
IGOOFED	Embarrassed admission

IGOOFED	"My bad!"
IGOOFED	"My mistake!"
IGOOFED	"Oops!"
IGOOFED	Slip acknowledgment
IGOOFED	"Whoops!"
IGOOFED	Acknowledgment on a slip
IGOOFED	Fault line?

Crossword

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