- Sub ___ (confidentially)
- Sub ___ (covertly)
- Sub ___ (hidden)
- Sub ___ (in confidence)
- Sub ___ (in secret)
- Sub ___ (secretly)
- Sub ... or a literal hint to 20-, 34- and 43-Across
- Sub (for)
- Sub (Var.)
- Sub access
- Sub alternative
- Sub apparatus
- Sub assembler
- Sub assemblers
- Sub assembly location
- Sub at the office
- Sub at work
- Sub base?
- Sub boss of fiction
- sub branch of physics
- Sub builder
- Sub builders
- Sub by another name
- Sub captain of fiction
- Sub captain's command
- Sub choice
- Sub commander of fiction
- Sub commander's order
- Sub compartment
- Sub Contractor detail
- Sub contractor?
- Sub contractors
- Sub designation
- Sub detection device
- sub detector
- Sub device
- Sub division of religious group
- Sub ending
- Sub entries
- Sub entry
- Sub feature
- Sub filler
- Sub filler, sometimes
- Sub finder
- Sub finisher?
- Sub follower
- Sub for
- Sub for a vacationer
- Sub for a while
- Sub for the unnamed
- sub German
- Sub gp.
- Sub group
- Sub groups?
- Sub head
- Sub in a bag
- Sub in a deli
- Sub in a tub
- Sub in a tub, e.g.
- Sub in Philly
- Sub in the fridge
- Sub in WWII
- Sub ingredient, often
- Sub inits.
- Sub launching
- Sub letters
- Sub locator
- Sub maneuver
- Sub manufacturer?
- Sub measurement
- Sub meat
- Sub missiles
- Sub mission site
- Sub navigation tool
- Sub need
- Sub of old
- Sub of WWII
- Sub offerer
- Sub officer
- Sub on a plate
- Sub on a screen
- Sub on a set
- Sub on a sub, maybe
- Sub opening
- Sub or Santa follower
- Sub or torpedo
- Sub outlet
- Sub plunge
- Sub powerer
- Sub purveyor
- Sub region?
- Sub rosa
- Sub sandwich
- Sub sandwich dressing item
- Sub section
- Sub seeker
- Sub seller
- Sub sensor
- Sub shop
- Sub shop veggie
- Sub shop?
- Sub shops
- Sub side
- Sub side, maybe
- Sub side, perhaps
- Sub sighter
- Sub sinker
- Sub sinker or trash receptacle
- Sub sinker, maybe
- Sub sinkers, in slang
- Sub sinkers, slangily
- Sub site
- Sub sites
- Sub skipper's command
- Sub sounder
- Sub sources
- Sub spot
- Sub spots
- Sub spotter
- Sub spread
- Sub spread, sometimes
- Sub squads
- Sub standard?
- Sub Station
- Sub station?
- Sub stations
- Sub store
- Sub stratum
- Sub substitute?
- Sub system
- Sub systems
- Sub technology
- Sub tenant?
- Sub that never plays?
- Sub that sank Allied ships
- Sub topper
- Sub tracker
- Sub tracking device
- Sub viewer
- sub Wartime Detain during
- Sub ways?
- Sub weapon
- Sub who is part of a cast
- Sub with a band
- Sub with salami
- Sub with sauerkraut?
- sub WWII 1/3 of a film title
- Sub you can't eat
- Sub zero comment
- Sub-___ Africa
- Sub-Arctic tribe
- Sub-atomic particle
- Sub-conscious sensor?
- Sub-freezing temperatures
- Sub-freezing temps
- sub-group of the Igbo people
- Sub-in, as athletes
- Sub-launched U.S. ballistic missile
- Sub-machine gun
- sub-nuclear particle
- sub-rosa
- Sub-Saharan antelope
- Sub-Saharan menace
- Sub-Saharan pest
- Sub-Saharan predator
- Sub-saharan region
- Sub-Saharan scourge
- Sub-Saharan staple
- Sub-Saharan sucker
- Sub-Saharan tormentors
- Sub-sub-players
- sub-tropical tree
- Sub-unit of a foot
- Sub-Zero competitor
- Sub, chips and a drink, e.g.
- Sub, perhaps
- Sub. for omitted names
- Sub's "ears"
- Sub's cousin
- Sub's emergency exit
- Sub's eye, for short
- Sub's gauge?
- Sub's goal
- Sub's navigational aid
- Sub's opposite
- Sub's opposite, in a dungeon
- Sub's opposite, in BDSM
- Sub's spot
- Sub's tracking device
- Sub's weapon, perhaps
- SUBACUTE nephritis, symptom of
- Subadolescent
- subaltern
- Subaltern ( Acronym )
- Subaquatic
- Subarctic evergreen forest
- Subarctic evergreen forests
- Subarctic forest
- Subarctic forest biome
- Subarctic Forest clearing
- Subarctic forests
- Subarctic tribe
- Subartic forest
- Subaru alternative
- Subaru Impreza, e.g.
- Subaru or Toyota
- Subaru Outback competitor
- Subaru Outback or Mazda 323
- Subarus named for a NYC area
- Subassembly
- Subatomic bit
- Subatomic particle
- Subatomic Particle
- SUBATOMIC particle (uncharged)
- Subatomic particle composed of one quark and one antiquark
- SUBATOMIC particle found in the atomic nucleus
- Subatomic particle in a collider
- Subatomic particle made of three quarks
- Subatomic particle more massive than an electron
- Subatomic particle named for an Indian physicist
- SUBATOMIC particle of the atomic nucleus
- Subatomic particle that comes in "flavors"
- Subatomic particle that is a nuclear binder
- subatomic particle thought to be the fundamental unit of matter
- Subatomic particle with a mass close to zero
- Subatomic particle with a negative charge
- Subatomic particle with mass close to zero and no electrical charge
- Subatomic particle with no electric charge
- Subatomic particles
- SUBATOMIC particles, subject to
- Subatomic topic
- subaverage
- Subbed
- Subbed (for)
- Subbed with the band
- Subcmte. mbr., perh.
- Subcommittee site
- Subcompact
- Subcompact based on the Hyundai Accent
- Subcompact Chevy of the 1970s
- Subcompact from Chevrolet
- Subcompact from Chevy
- Subcompact of the 1970s
- Subcompact that debuted in 1975
- Subcompact thing
- Subcompact's smaller kin
- subconscious
- subconscious or person within
- SUBCONTINENT
- subcontinent prince