12-Letter Words Starting with O

Oafishness

Oarsmanship

""OBDURATE to become hard-hearted, also OBDURE""

Obfuscation

Objurgation

Oblateness

Obliterator

Obscuration

Roughly Sobers admits VAT is charged for examinations

Measurements from an experiment soon vibrates all over the place

Occultation

Oceanology

Ochlocracy

Octapeptide

Odontoblast

Officialdom

Officialese

Officialism

Officiation

Oligochaete

Oligophagy

""Feeding on a restricted range of food substances, especially a limited number of plants. Used chiefly of insects.""

Any of a group of viruses that contain single-stranded RNA and produce tumors in birds and mammals.

Opalescence

Opaqueness

OPERATOR one that {operates=v}

Optimality

Arranges music

Narrow passages for killer whales (wordplay)

""Pertaining to, or resembling, a natural order (Orchidace\'91) of endogenous plants of which the genus Orchis is the type. They are mostly perennial herbs having the stamens and pistils united in a single column, and normally three petals and three sepals, all adherent to the ovary. The flowers are curiously shaped, often resembling insects, the odd or lower petal (called the lip) being unlike the others, and sometimes of a strange and unexpected appearance. About one hundred species occur in the United States, but several thousand in the tropics. Orchidace\'91) of endogenous plants of which the genus Orchis is the type. They are mostly perennial herbs having the stamens and pistils united in a single column, and normally three petals and three sepals, all adherent to the ovary. The flowers are curiously shaped, often resembling insects, the odd or lower petal (called the lip) being unlike the others, and sometimes of a strange and unexpected appearance. About one hundred species occur in the United States, but several thousand in the tropics.""

Commonly encountered; usual. See Synonyms at common .

Organicity

Organology

Orientalism

Orientalist

Orientalize

Orientation

Origination

Ornateness

Pl. oropharynges (-f -r n j z) or oropharynxes The part of the pharynx between the soft palate and the epiglottis.

Oropharynx

Orthodontia

The treatment of bone and muscle disorders

Rum do, as her topic is a medical speciality

Orthopteran

Devious colonialists making waves

Oscillogram

Osmolality

Osmolarity

Ostentation

Given to showy display

Gaudy and garish

Showy and vulgar

Osteopathy

Ostracoderm

OUTDATED outdate

Leaves behind.

Outmaneuver

Outorganize

Outpopulate

Ovariotomy

Overachieve

Overanalyse

Overanalysie

Overanalyze

Overarousal

Overarrange

Overbalance

Overbleach

Overcasting

Overcaution

A curious vote, sadly going for the ultra-safe option (wordplay)

Overeducate

EMPHASES emphasis

Promises have produced too much stress

Excessive stress

Excessive underlining

Overexplain

Overfatigue

Overgarment

Overharvest

Overinflate

Overoperate

Overpackage

Overpayment

Overprogram

REACHERS reacher

Overvoltage

Oxalacetate

Oxygenation

Ozonization