- On a previous occasion
- On a proportional basis
- on a puff of air Move
- On a rampage
- On a rapid rise
- On a recurring basis
- On a regular basis
- On a road trip
- On a road trip, say
- On a roll
- On a roof deck, say
- On a scale from one ___
- On a scale of ___ 10
- On a scale of ___ ten
- On a scale of 1 to 10, what one amp in "This Is Spinal Tap" goes to
- On a scale of one ___
- On a scale of one to ___
- On a schooner, say
- on a score Arc Hit in a high
- on a scorecard Bunt situation
- On a Seder plate, it represents the arrival of springtime
- On a ship
- On a ship or train
- On a ship, perhaps
- On a ship, train or plane
- on a ship, train, plane or other vehicle
- On a similar note and the like
- On a similar note, e.g.
- On a single occasion
- On a slant
- On a slant: Abbr.
- ON a slope
- On a slow boat to
- On a slow boat to China
- On a smaller scale
- On a sofa
- On a sofa, say
- On a spit, say
- On a spree
- On a steamer, say
- On a streak
- On a streak?
- On a sugar high, say
- on a surface Condense
- on a surface Gather
- On a tether
- On a tight leash
- On a tight schedule
- On a tilt
- On a tilt.
- On a tool's upper surface?
- On a train
- On a trip
- On a vast scale
- On a voyage
- On a voyage on the ocean
- On a walk, perhaps
- on a wall Layer
- On a wayward path
- On a wet voyage
- On a whale watch, perhaps
- On a whale-watching tour, say
- On a winning streak
- On a wish list
- On a yacht, maybe
- On a yacht, perhaps
- On a yawl, say
- on account
- On account (of)
- On account of
- On account of (with 'to')
- on account of rain Called First to be
- on active service
- ON address, or Disney duck
- On again
- On again, as a candle
- On again, as a lantern
- On again, in a way
- On again, off again love stories, say
- on air Walking
- On alert
- On all (crawling)
- On all ___ (crawling, say)
- On all counts
- on all fours Move
- ON all sides
- On an ___ basis
- On an ___ keel
- On an ad ___ basis
- On an airplane
- On an airplane, it's filled with nitrogen rather than air
- On an America's Cup yacht
- on an angle
- On an ark, e.g.
- On an errand, say
- On an even __ (steady)
- On an even ___
- On an even ___ (balanced)
- On an even ___ (stable)
- On an even keel
- On an incline
- On an ocean journey
- On an ocean liner
- On an ocean liner, e.g.
- On an ocean liner, maybe
- On an ocean liner, perhaps
- On an ocean liner, say
- On an ocean trip
- On an ocean voyage
- On an opponent's field
- On an upper floor
- On an upper storey
- On an upswing
- On and after
- On and on
- On and on ... or how to read 18-, 27-, 37- and 51-Across to understand this puzzle's theme?
- On and on and on
- On and on and on and on and ...
- On and on and on and on and 
- on and on Going Coming or
- On another call
- On antonym
- on any occasion
- on approval
- on assignment
- on bad terms
- On balance
- On base
- On base, in baseball
- On base, say
- On bed rest, say
- ON behalf of
- on behalf of king
- ON BENDED
- On bended ___
- On better behavior, to Santa
- On Beyond Zebra! boy Conrad Cornelius o'Donald ___
- ON board
- On board a ship or boat
- on board Drink
- on board Put
- on board Room
- on board Safe deposit box item
- ON board ship
- on board Stored
- on bodybuilders Ripple
- On both banks of
- On both feet
- On both sides
- On both sides of
- On break, say
- on Bring about
- on Build
- on Call
- On call device
- on cargo Put
- on Carry
- On chairs
- On Chesil Beach novelist Ian
- on Chinese menus General address
- On clippers?
- On close personal terms
- On cloud __
- On cloud ___ (elated)
- On cloud nine
- On cloud nine feeling
- On cloud Nine Group of
- on Coat
- On condition
- On Contradiction author
- On court stabbing victim
- On deck
- on deck Longer
- On deck, for example
- On deck, on ships
- On deck, perhaps
- On deck, say
- On deep water
- On delay
- On delivery?
- On different sides
- On disk
- On Disk Clear, as a
- On disk, say
- On display
- On dope
- on draft Drink
- On drugs
- On drugs, say
- On drugs, slangily
- On dry ground
- On dry Land
- On dry land
- on duty
- on each occasion
- on earth
- On Earth ___ is in Heaven
- on earth Anywhere Not going
- on earth Heaven
- On easy street
- On easy street, e.g.
- On eBay, e.g.
- On edge
- On edge with excitement
- On edge, as nerves
- On edge, with "up"
- On edibles, say
- On either side of the center
- On empty
- on end
- on end Time
- on equal
- On equal terms
- on equal terms by payment or requital
- On even terms
- On every occasion
- On every single occasion
- On everyone's A-list
- on face paint
- On familiar ground
- On fast food, perhaps
- on fire
- On fire in real time?
- On fire in the kitchen
- on fire Pants
- On fire, as a match
- On fire, as some desserts
- On fire, in restaurant lingo
- On fire, on a menu
- On fire, so to speak
- On firm ground
- On first impression
- On First Looking Into Chapman's Homer poet
- on first or second or third base
- On floppy disk, say
- on foot
- on foot Measure
- On Friday, Big Apple ball park makes a bundle (5)
- on friendly terms
- On Golden ___
- On Golden ___ (Henry Fonda film)
- On Golden Pond actor or actress
- On Golden Pond bird
- On Golden Pond birds
- On Golden Pond Oscar winner
- On Golden Pond playwright Thompson
- On Golden Pond role
- On Golden Pond wife
- on good
- On good grounds