There is a total of 21191 clues beginning with si
- Single performances
- Single person
- Single person hanging out with a couple
- Single person's last words
- Single person's last words, often
- Single person's last words?
- Single photograph
- Single piece
- Single piece of information
- Single piece of underwear, paradoxically
- Single player
- Single players
- Single point
- Single point
- Single points in tennis
- Single points
- Single portion of food
- Single portion of food
- Single portion of some food
- Single prefix
- Single proprietor
- Single quantity
- Single quote?
- Single record's "other" song
- Single released in the same year as "Macho Man"
- Single result, perhaps
- Single result, possibly (abbr,)
- Single rotation period
- Single scoop
- Single scull equipment
- Single season strike-out king
- Single section
- Single serving of butter
- Single serving of sugar
- Single serving, like sugar
- Single sheet
- Single shoe protector
- Single shot
- Single shot awarded for being fouled while scoring, in basketball lingo
- Single shot, perhaps
- Single show
- Single silver bar wearer
- Single singer
- Single situation in a drama
- Single situp
- Single situp, say
- Single sock, eg
- Single sorts, and the letters dropped from pairs in the theme answers
- Single source?
- Single spot on a card
- Single spreadsheet cell
- Single squad car
- Single squat or crunch
- Single squat, say
- Single squats, say
- Single Sra
- Single star state
- Single starter?
- Single statistic
- Single step
- Single step
- Single steps
- Single stock quantity
- Single strand found in hair
- Single stroke
- Single subatomic energy unit
- Single surface
- Single surface?
- Single tally
- Single thickness
- Single thickness or fold
- Single thickness
- Single thing
- Single thing with two parts
- Single thing, or a couple
- Single thing
- Single things
- Single things
- Single things: Abbr
- Single thread
- Single time
- Single time
- Single time?
- Single trip across a pool
- Single trip around a track
- Single undivided entity
- Single unit
- Single unit of two corresponding parts
- Single unit
- Single units
- Single wave that retains its shape and speed after a collision
- Single white male who likes the cold?
- Single woman
- Single word
- Single year's events
- Single year's record
- Single __: Olympics event
- Single __: tournament format, briefly
- Single __: tournament type
- Single ___