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observable
Able to be seen or noticed.
observance
The act of following or respecting rules.
observant
Noticing details quickly and accurately.
observation
The act of watching something carefully.
observational
Related to observing or watching.
observatory
A place for observing astronomical events.
observe
to comply with or follow a rule or law
observer
a device that monitors or records
obsess
To think about something constantly.
obsession
An uncontrollable preoccupation with something.
obsessive
Having an excessive preoccupation with something.
obsessively
In a way that shows excessive focus or concern.
obsidian
A black volcanic glass used for tools and decoration.
obsolescence
The state of being outdated or no longer useful.
obsolete
No longer used or out of date.
obstacle
Something that blocks or hinders progress.
obstetric
Related to childbirth and pregnancy care.
obstetrician
A doctor specializing in pregnancy and childbirth.
obstinate
Stubbornly refusing to change one's opinion.
obstruct
To block or hinder progress.
obstruction
something blocking a path or progress.
obstructive
Causing blockage or hindrance.
obtain
to get or acquire something
obtainable
able to be acquired or gotten.