Countable Nouns That Start with OBS

Find 38 valid English countable nouns starting with OBS, including Observation, Obstacle, Observer, Obsession, Obstruction, Obsessive and Obscurity. Check definitions and usage below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with OBSC
7 words
obscurity
obscenity
obscuration
obscura
obscurantist
obscurement
obscurant
Starts with OBSE
17 words
observation
observer
obsession
obsessive
observable
observance
observatory
observability
obsequies
obsessional
obsessor
obsequy
observator
obsecration
observancy
obsequent
obsessionist
Starts with OBSI
2 words
obsidian
obsignation
Starts with OBSO
2 words
obsoletion
obsoletism
Starts with OBST
10 words
obstacle
obstruction
obstetrician
obstinacy
obstructionist
obstruent
obstructor
obstipation
obstetrix
obstriction

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