There is a total of 85677 clues beginning with o
- Of heart arteries
- Of heat
- Of heat
- Of heavy build
- Of Hebrew letters: Abbr
- Of help
- Of heraldry
- Of heraldry
- Of hereditary factors
- Of heredity
- Of heritable land: Law
- Of heroic character
- Of heroic dimensions
- Of heroic mold
- Of heroic scale
- Of heroic size
- Of heroic stature
- Of hidden meaning
- Of high elevation
- Of high estate
- Of high ideals
- Of high integrity
- Of high intelligence
- Of high moral character
- Of high mountains
- Of high noble rank
- Of high professional character
- Of high rank
- Of high repute
- Of high social status
- Of high specific gravity
- Of higher grade
- Of higher quality
- Of higher rank
- Of higher rank than
- Of higher rank
- Of highest excellence
- Of highest grade
- Of Hindu history
- Of Hindu incantations
- Of Hindu sacred writing
- Of Hindu scripture
- Of Hindu scriptures
- Of Hindu stock: Prefix
- Of Hindu writings
- Of Hispanic heritage
- Of historic dimensions
- Of historic importance
- Of historic proportions
- Of historic time
- Of historical importance
- Of hives, honey, etc
- Of hogs and peccaries
- Of Holland
- Of Holy Communion
- Of holy rites
- Of homelanders: Sp
- Of Horace's works
- Of horses
- Of horses, a color
- Of hours
- Of humble descent
- Of humble parentage
- Of humble status
- Of humongous proportions
- Of hymenopterans
- Of icy regions
- Of ideal quality
- Of ill repute
- Of immature insects
- Of immediate concern
- Of immediate interest
- Of immediate interest
- Of importance
- Of importance to savers
- Of importance
- Of imposing height
- Of imposing height
- Of impressive height
- Of impressive size
- Of incisors and molars
- Of inconsistent quality
- Of indefinite age
- Of indeterminate gender
- Of India or Greenland [five vowels in reverse order]
- Of infancy
- Of inferior quality
- Of inferior status
- Of inferior status: Fr
- Of inferior workmanship
- Of inherited factors
- Of inserted comment
- Of intense pain
- Of interest of dieters
- Of interest to "hams"
- Of interest to a collector, say
- Of interest to a few
- Of interest to a scout
- Of interest to all
- Of interest to an ENT