Coordination

a cryptic puzzle by Emily Cox and Henry Rathvon

Solution grid
The two extraneous letters in each clue appear after the answer.

Across

  • 1.
    TOPSIDE
  • 2.
    YEARNS
  • 3.
    GARRETS
  • 4.
    GHOSTLY
  • 5.
    CLOUDED
  • 6.
    AURORA
  • 7.
    GALLERY
  • 8.
    POLTERGEIST
  • 9.
    SPOON
  • 10.
    OLFACTION
  • 11.
    COURTSHIP
  • 12.
    TEEMS
  • 13.
    HATCH
  • 14.
    PARIAH
  • 15.
    WHILOM
  • 16.
    BILLIONAIRE
  • 17.
    WREATHE
  • 18.
    LAMINAE
  • 19.
    MEANDER
  • 20.
    BOUDOIR
  • 21.
    TESLA
  • 22.
    POMEGRANATE
  • 23.
    OCCULT
  • 24.
    NOOSE
  • 25.
    MANGE
  • 26.
    ICELANDER
  • 27.
    OBSCURE
  • 28.
    HECATE
  • 29.
    TRACERY
  • 30.
    COROLLARIES
  • 31.
    TAMPA
  • 32.
    REELED
  • 33.
    HYGIENE
  • 34.
    ORCHESTRA
  • 35.
    LINTY
  • 36.
    SPLOTCH
  • 37.
    FREIGHT
  • 38.
    HEYDAY