There is a total of 6259 clues beginning with is
- Is absorbed, in a way
 - Is absurd
 - Is abundant
 - Is abundant
 - Is abuzz
 - Is abuzz (with)
 - Is acceptable
 - Is accepted
 - Is accepted, as for membership: 2 wds
 - Is accommodating
 - Is acquainted with
 - Is acquainted with a quartet of wildebeests?
 - Is acquitted
 - Is acquitted, slangily
 - Is acting boss
 - is active
 - Is active on Wall Street
 - Is active without making progress or falling behind
 - Is added over time
 - Is added, like interest
 - Is addicted to, maybe
 - Is adept
 - Is adept at
 - Is adequate
 - Is adequate
 - Is adequate: Colloq
 - Is adjacent to
 - Is adjacent to
 - Is advantageous
 - Is advantageous to
 - Is advised
 - Is affable, maybe
 - Is affected (by some influence, event, etc)
 - Is affected by
 - Is affected by a sidewinder
 - Is affected by black light, perhaps
 - Is affected by some event
 - Is affected by sunlight, perhaps
 - Is affected by, as a chemical
 - Is affected by
 - Is afflicated by
 - Is afflicted
 - Is afflicted by
 - Is afflicted with
 - Is afflicted with sigmatism
 - Is afraid of
 - Is afraid of looking immature
 - Is afraid to
 - Is afraid, Biblical style
 - Is after
 - Is after you
 - Is after you?
 - Is against
 - Is aggrieved at
 - Is agitated
 - Is agnostic, say
 - Is agreeable
 - Is agreeable to
 - Is agreeable
 - Is ahead
 - Is ahead
 - Is alarmed
 - Is alarming?
 - Is alive
 - Is all booked up
 - Is all ears
 - Is all motion with no progress
 - Is all wrong
 - Is allotted (to)
 - Is allowed
 - Is allowed (to)
 - Is allowed to
 - Is allowed to, quaintly
 - Is allowed, to the Bard
 - Is already booked
 - Is always beating
 - Is ambitious
 - Is ambitious (with "to")
 - Is amused by
 - Is an accessory
 - Is an accessory for
 - Is an accomplice
 - Is an accomplice to
 - Is an actor in poker
 - Is an affectionate pooch
 - Is an agent for, informally
 - Is an angel to
 - Is an apt student
 - Is an ass?
 - Is an ecdysiast
 - Is an expert
 - Is an expert on this puzzle's theme?
 - Is an innovator
 - Is an integral part of
 - Is an intellectual artistic?
 - Is an Internet explorer
 - Is an obedient dog, in a way
 - Is an obedient dog, maybe
 - Is an old French landowner?
 - Is an omen of