Dictionary

All Word
open Verb used of meetings, speeches, etc., to begin or set in action
open Verb start to operate or function or cause to start operating or functioning
open Verb have an opening or passage or outlet
overactive Adjective more active than normal
on the go Adjective (of a person) very busy and active
oxidative Adjective taking place in the presence of oxygen
obstreperous Adjective boisterously and noisily aggressive
obstreperous Adjective noisily and stubbornly defiant
open-eyed Adjective carefully observant or attentive
overwrought Adjective deeply agitated especially from emotion
oral Adjective a stage in psychosexual development when the child's interest is concentrated in the mouth
oral Adjective of or involving the mouth or mouth region or the surface on which the mouth is located
oral Adjective using speech rather than writing
oral Adjective of or relating to or affecting or for use in the mouth
oral Noun an examination conducted by spoken communication
oracular Adjective resembling an oracle in obscurity of thought
oracular Adjective obscurely prophetic
oracular Adjective of or relating to an oracle
overambitious Adjective excessively ambitious
out of play Adjective of a ball, not currently able to be used in the game
outraged Adjective angered at something unjust or wrong
overland Adjective traveling or passing over land
offish Adjective lacking cordiality
onymous Adjective bearing a name
old Adjective just preceding something else in time or order
old Adjective skilled through long experience
old Adjective of long duration
old Adjective having lived for a relatively long time or attained a specific age
old Adjective belonging to some prior time
old Noun past times
old Adjective (used for emphasis) very familiar
old Adjective (used informally especially for emphasis)
one-armed Adjective having one arm
overdue Adjective past due
out-of-pocket Adjective calling for the spending of cash
off-putting Adjective tending to repel
off-putting Adjective causing annoyance or repugnance
observant Adjective paying close attention especially to details
observant Adjective (of individuals) adhering strictly to laws and rules and customs
observant Adjective quick to notice
oversolicitous Adjective excessively solicitous
oscitant Adjective showing lack of attention or boredom
oblivious Adjective failing to keep in mind
oblivious Adjective (followed by `to' or `of') lacking conscious awareness of
on guard Adjective vigilant
on one's guard Adjective vigilant
on your guard Adjective vigilant
ominous Adjective presaging ill fortune
ominous Adjective threatening or foreshadowing evil or tragic developments
on hand Adjective readily available