English: O
Words starting with "O"
onset
/ˈɒnˌsɛt/
on side
onslaught
/ˈɑn.slɔt/
on spec
on strike
on sufferance
on target
on-the-air
on the back burner
on the ball
on the bench
on the blink
on the brink of
/ɒn ðə brɪŋk əv/
on the bubble
on the carpet
on the cheap
on the dot
on the fence
on the game
on the horn
on the lam
on the latch
on the level
on the line
on the mend
on the nail
on the other hand
on the piss
on the plus side
on the rag
on the rocks
on the same page
on the same wavelength
on the sly
on the spot
on the tip of one's tongue
on the up-and-up
on the uptake
on the wagon
on the wane
on the whole
ontic
on time
on tiptoe
onto
/ˈɒn.tuː/
ontogenesis
ontogeny
/ɒnˈtɒdʒəni/
ontological
/ɑntəlˈɑdʒɪkəl/
ontology
/ɒnˈtɒləd͡ʒi/
on top
on top of
onus
/ˈəʊnəs/
onward
/ˈɒnwəd/
onymous
/ˈɑn.ɪ.məs/
onyx
/ˈɒnɪks/
oo
oocyte
/ˈəʊəsʌɪt/
O'odham
/ɔʔɔˈtam/
oodles
/ˈuːd(ə)lz/
oof
/uf/
ooidal
ook
/uk/
oölogy
oolong tea
/ˈuː.lʊŋ tʰi/
oom
/ʊəm/
oom-pah
oomph
/ʊmf/
oophagy
/əʊˈɒfədʒi/
oops
/uːps/
OOTB
ootheca
/əʊəˈθiːkə/
ooze
/uːz/
op
/ɑp/
opal
/ˈəʊpəl/
opalescent
/oʊpəˈlɛsənt/
opaque
/oʊˈpeɪk/
open
/ˈoʊ.pən/
open-collar
open compound
open content
open design
opened
/ˈoʊpənd/
open-ended
/ˈoʊpənɛndəd/
opener
/ˈoʊ.pən.ɚ/
open-handed
open-hearted
open house
opening
/ˈoʊ.pə.nɪŋ/
opening hours
openly
/ˈoʊpənli/
open mind
open-minded
open-mouthed
openness
/ˈoʊpənɛs/
open outsourcing
open sea
open sesame
open-source
/ˈoʊpən ˌsɔɹs/
open system
open the attack