As adjectives the difference between threefold and thribble
is that threefold is three times as great while thribble is (label) threefold.
As an adverb threefold
is by a factor of three.
As a noun thribble is
a set of oil drilling pipes having three joints.
threefold
English
Adjective
(-)
three times as great
triple
Adverb
(-)
by a factor of three
thribble
English
Adjective
(-)
(label) threefold
Noun
(
en noun)
A set of oil drilling pipes having three joints