Examples:
a
boisterous
crowd
a
social
gathering
that
became
rambunctious
and
out
of
hand
a
robustious
group
of
teenagers
beneath
the
rumbustious
surface
of
his
paintings
is
sympathy
for
the
vulnerability
of
ordinary
human
beings
an
unruly
class
robustious (English)
├── -ious (English)
│ ├── -i- (English)
│ └── -ous (English)
└── robust (English)
└── robustus (Latin)
└── robur (Latin)
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