List of 13-letter words beginning with

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There are 20 thirteen-letter words beginning with OBS

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.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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English Wiktionary: 31 words
Scrabble in French: 25 words
Scrabble in Spanish: 54 words
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: 55 words

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