| OBSCENENESSES | • OBSCENENESS n. the state of being obscene. |
| OBSCURANTISMS | • obscurantisms n. Plural of obscurantism. • OBSCURANTISM n. opposition to the spread of knowledge; deliberate vagueness or abstruseness. |
| OBSCURANTISTS | • obscurantists n. Plural of obscurantist. • OBSCURANTIST n. one who employs deliberate obscurity. |
| OBSCURENESSES | • obscurenesses n. Plural of obscureness. • OBSCURENESS n. the state of being obscure. |
| OBSERVABILITY | • observability n. (Uncountable) The state of being observable. • observability n. (Countable) A measure of the extent to which something is observable. • OBSERVABILITY n. the state of being observable. |
| OBSERVATIONAL | • observational adj. Relating to observation, especially scientific observation. • OBSERVATIONAL adj. related to observation. |
| OBSERVATORIES | • observatories n. Plural of observatory. • OBSERVATORY n. a building or place given over to or equipped for observation of natural phenomena (as in astronomy). |
| OBSESSIONALLY | • obsessionally adv. In an obsessional manner. • OBSESSIONAL adv. relating to obsession. |
| OBSESSIONISTS | • obsessionists n. Plural of obsessionist. • OBSESSIONIST n. someone who is obsessed by a fixed idea. |
| OBSESSIVENESS | • obsessiveness n. The characteristic of being obsessive. • OBSESSIVE n. subject to obsession. |
| OBSOLESCENCES | • obsolescences n. Plural of obsolescence. • OBSOLESCENCE n. the process of becoming obsolete or the condition of being nearly obsolete. |
| OBSOLESCENTLY | • obsolescently adv. In an obsolescent manner. • OBSOLESCENT adv. not functional, but not reduced to a rudiment. |
| OBSTETRICALLY | • obstetrically adv. (Medicine) In terms of obstetrics. • OBSTETRICAL adv. relating to the care of women during pregnancy, also OBSTETRIC. |
| OBSTETRICIANS | • obstetricians n. Plural of obstetrician. • OBSTETRICIAN n. one who specialises in the care of women during pregnancy. |
| OBSTINATENESS | • obstinateness n. The characteristic of being obstinate. • OBSTINATE n. stubborn. |
| OBSTREPERATED | • obstreperated v. Simple past tense and past participle of obstreperate. • OBSTREPERATE v. (Sterne) to make an unruly noise. |
| OBSTREPERATES | • obstreperates v. Third-person singular simple present indicative form of obstreperate. • OBSTREPERATE v. (Sterne) to make an unruly noise. |
| OBSTRUCTINGLY | • obstructingly adv. So as to obstruct. • OBSTRUCTINGLY adv. in an obstructing manner. |
| OBSTRUCTIONAL | • obstructional adj. Being or relating to an obstruction. • OBSTRUCTIONAL adj. relating to obstruction. |
| OBSTRUCTIVELY | • obstructively adv. In an obstructive manner. • OBSTRUCTIVE adv. serving to obstruct. |