Examples:
described
in
unprofessional
language
so
that
high
school
students
could
understand
it
was
censured
for
unprofessional
conduct
unprofessional
repairs
unprofessional (English)
├── professional (English)
└── un- (English)
├── on- (Middle English (1100-1500))
│ ├── on- (Old English (ca. 450-1100))
│ └── ond- (Old English (ca. 450-1100))
├── un- (Middle English (1100-1500))
│ └── un- (Old English (ca. 450-1100))
└── unus (Latin)
└── oinos (Latin)
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