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rat
verb
-
rat
,
ratting
,
rats
,
ratted
to
secretly
give
information
about
someone
to
an
authority
,
betraying
their
trust
•
He
refused
to
rat on
his
friends
even
when
the
principal
threatened
detention
.
He
refused
to
rat on
his
friends
even
when
the
principal
threatened
detention
.
•
She
felt
guilty
after
ratting
to
her
parents
about
her
brother's
broken
window
.
She
felt
guilty
after
ratting
to
her
parents
about
her
brother's
broken
window
.
Extension
of
the
slang
noun
sense
,
likening
betrayal
to
the
sneaky
movements
of
a
rat
.
