There is a total of 21191 clues beginning with si
- Sign of a Southerner, perhaps
- Sign of a spill
- Sign of a sprain, maybe
- Sign of a sprained ankle
- Sign of a stage hit
- Sign of a struggle
- Sign of a success
- Sign of a successful show
- Sign of a sunbather
- Sign of a thaw
- Sign of a theatrical hit
- Sign of a thick brogue?
- Sign of a trolley
- Sign of a well-used book
- Sign of a well-worn trail
- Sign of a winner
- Sign of a winner?
- Sign of a winning team
- Sign of a working phone
- Sign of a wound's healing
- Sign of acne
- Sign of adulthood
- Sign of affected emotion
- Sign of affection
- Sign of affection, in 28-Down
- Sign of affection, old style
- Sign of affection, to a horse?
- Sign of affection
- Sign of affluence
- Sign of age
- Sign of age on a car
- Sign of age, maybe
- Sign of age
- Sign of age?
- Sign of aging
- Sign of aging in some armies?
- Sign of aging?
- Sign of agreement
- Sign of alertness
- Sign of alien life, some say
- Sign of amusement
- Sign of an absent mind
- Sign of an absent–minded bridge player
- Sign of an allergic reaction
- Sign of an allergy
- Sign of an angel
- Sign of an approaching storm
- Sign of an artist
- Sign of an earthquake
- Sign of an engine problem
- Sign of an error
- Sign of an escape, perhaps
- Sign of an escape?
- Sign of an impending merger?
- Sign of an indifferent homemaker
- Sign of an injury
- Sign of an injury, maybe
- Sign of an oil shortage?
- Sign of an old bumper
- Sign of an old injury
- Sign of an old wound
- Sign of an omission
- Sign of an overflow
- Sign of an uncleaned fridge
- Sign of an untreated pool
- Sign of anger
- Sign of annoyance
- Sign of anxiety
- Sign of apathy
- Sign of appreciation
- Sign of approval
- Sign of approval, familiarly
- Sign of approval
- Sign of April Fool's Day?
- Sign of Aries
- Sign of assent
- Sign of assent
- Sign of audience approval
- Sign of August
- Sign of authority
- Sign of auto body aging
- Sign of autumn
- Sign of autumn's beginning
- Sign of availability
- Sign of bad food, perhaps
- Sign of bad luck
- Sign of bad reception
- Sign of bad service?
- Sign of bad weather
- Sign of balance
- Sign of balance?
- Sign of being a non-native speaker
- Sign of being full?
- Sign of being packed?
- Sign of big business: Abbr
- Sign of biodegradation
- Sign of bipolar disorder
- Sign of boredom
- Sign of boredom
- Sign of breakfast burning?