in a flash

ADVERB
10 LETTERS · STARTS WITH I

in a flash is a valid 10-letter word worth 14 points in Scrabble and 15 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1A1F4L1A1S1H4
1 + 1 + 0 + 1 + 0 + 4 + 1 + 1 + 1 + 4 =14 PTS
DOUBLE WORD → 28TRIPLE WORD → 42
MEANING

What does in a flash mean?

ADVERB · 1 SENSE
1

Without any delay.