There is a total of 6665 clues beginning with at
- Attack the whiskers
 - Attack time
 - Attack time in WW II
 - Attack time?
 - Attack to parry
 - Attack underhandedly
 - Attack unexpectedly
 - Attack unit
 - Attack unrestrainedly
 - Attack upon a city
 - Attack USA Today?
 - Attack using voodoo, sort of
 - Attack verbally
 - Attack verbally, with "at"
 - Attack verbally
 - Attack vessels
 - Attack vessels: Abbr
 - Attack via fighter plane
 - Attack via plane, in a way
 - Attack viciously (with "at")
 - Attack vigorously
 - Attack vigorously, with "into"
 - Attack violently
 - Attack violently, as a fortress
 - Attack violently
 - Attack vocally
 - Attack warning (with 1-Across)
 - Attack warning
 - Attack weeds
 - Attack with a beak
 - Attack with a dagger
 - Attack with a knife
 - Attack with a lance
 - Attack with a low flyover
 - Attack with a shiv
 - Attack with a sword
 - Attack with abandon
 - Attack with Big Bertha
 - Attack with enthusiasm, as a project
 - Attack with evil reports
 - Attack with ferocity
 - Attack with force
 - Attack with gunfire
 - Attack with gunfire
 - Attack with gusto
 - Attack with harsh criticism
 - Attack with profanity
 - Attack with repeated fire
 - Attack with rocks
 - Attack with severe criticism
 - Attack with snowballs
 - Attack with snowballs, eg
 - Attack with snowballs, say
 - Attack with the tongue
 - Attack with vigor
 - Attack with vigor: Colloq
 - Attack with violence
 - Attack with water balloons, say
 - Attack with, as insults
 - Attack without provocation
 - Attack without warning
 - Attack word
 - Attack word to 38-Down
 - Attack word to a dog
 - Attack word, for a dog
 - Attack words
 - Attack words that might be spoken as a compliment
 - Attack zealously
 - Attack ___
 - Attack ___ (campaign tactic)
 - Attack's opposite
 - Attack, as a bee might
 - Attack, as a bird
 - Attack, as a castle
 - Attack, as a dog
 - Attack, as a fighter plane
 - Attack, as a fly
 - Attack, as a gnat
 - Attack, as a piƱata
 - Attack, as a puppy
 - Attack, as across a boundary
 - Attack, as Caesar
 - Attack, as false science
 - Attack, as one's work
 - Attack, as ramparts
 - Attack, as with eggs
 - Attack, as with questions
 - Attack, as with snowballs
 - Attack, bear-style
 - Attack, bee-style
 - Attack, cat-style
 - Attack, either physically or verbally
 - Attack, in a way
 - Attack, like a bear
 - Attack, like a toy
 - Attack, old-style
 - Attack, puppy-style
 - Attack, scorpion style
 - Attack, tiger-style
 - Attack, to a dog