Etymological root
*h₃ep-
Proto-Indo-European
Words from this root(9)
office
A1
/ˈɔ.fɪs/
A room or building where people work, usually at desks.
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officer
A2
/ˈɔfɪsɚ/
A member of the police.
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official
A2
/əˈfɪʃəl/
Approved by or coming from a person in authority.
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opera
B2
/ˈɑp.ə.ɹə/
A dramatic play set to music in which the words are sung rather than spoken.
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operate
A2
/ˈɑpəɹeɪt/
To control or make a machine, device, or system work.
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operator
B2
/ˈɑpəˌɹeɪtɚ/
A person who controls a machine or piece of equipment.
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operational
C1
/ˌɑ.pəˈɹeɪ.ʃə.nəl/
Working and ready to be used.
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opulent
C2
/ˈɒpjʊlənt/
Showing great wealth and luxury; richly grand.
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opulence
C2
/ˈɒp.jʊl.əns/
Great wealth shown through luxurious and lavish living.
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