The word "swivelled" is derived from the verb "swivel", which has its origins in Middle English.
The Middle English term "swyvelen" meant "to swing" or "to pivot". This word was borrowed from the Old Norse "svifla", which had a similar meaning.
The Old Norse "svifla" ultimately came from the Proto-Germanic word "swiflōną", meaning "to move quickly" or "to flutter". In Proto-Germanic, "swiflōną" was formed by combining the root "swef-" (meaning "swift" or "quick") with the suffix "-lōną" (indicating a transitive verb).
Over time, the verb "swivel" evolved in English to refer specifically to the act of rotating around a fixed point or axis.
CONDITIONAL
I
would swivelled
you
would swivelled
he/she/it
would swivelled
we
would swivelled
they
would swivelled
I
would swivel
we
would swivel
you
would swivel
he/she/it
would swivel
they
would swivel
CONDITIONAL CONTINUOUS
I
would be swivelling
you
would be swivelling
he/she/it
would be swivelling
we
would be swivelling
they
would be swivelling
CONDITIONAL PERFECT
I
would have swivelled
you
would have swivelled
he/she/it
would have swivelled
we
would have swivelled
they
would have swivelled
CONDITIONAL PERFECT CONTINUOUS
I
would have been swivelling
you
would have been swivelling
he/she/it
would have been swivelling
we
would have been swivelling
they
would have been swivelling
FUTURE
I
will swivel
you
will swivel
he/she/it
will swivel
we
will swivel
they
will swivel
FUTURE CONTINUOUS
I
will be swivelling
you
will be swivelling
he/she/it
will be swivelling
we
will be swivelling
they
will be swivelling
FUTURE PERFECT
I
will have swivelled
you
will have swivelled
he/she/it
will have swivelled
we
will have swivelled
they
will have swivelled
I
will have swivelled, will have swiveled
we
will have swivelled, will have swiveled
you
will have swivelled, will have swiveled
he/she/it
will have swivelled, will have swiveled
they
will have swivelled, will have swiveled
FUTURE PERFECT CONTINUOUS
I
will have been swivelling
you
will have been swivelling
he/she/it
will have been swivelling
we
will have been swivelling
they
will have been swivelling
IMPERATIVE
you
swivel
we
let´s swivel
to swivel
PAST
I
swivelled
you
swivelled
he/she/it
swivelled
we
swivelled
they
swivelled
I
swivelled, swiveled
we
swivelled, swiveled
you
swivelled, swiveled
he/she/it
swivelled, swiveled
they
swivelled, swiveled
PAST CONTINUOUS
I
was swivelling
you
were swivelling
he/she/it
was swivelling
we
were swivelling
they
were swivelling
PAST PARTICIPLE
swivelled
PAST PERFECT
I
had swivelled
you
had swivelled
he/she/it
had swivelled
we
had swivelled
they
had swivelled
I
had swivelled, had swiveled
we
had swivelled, had swiveled
you
had swivelled, had swiveled
he/she/it
had swivelled, had swiveled
they
had swivelled, had swiveled
PAST PERFECT CONTINUOUS
I
had been swivelling
you
had been swivelling
he/she/it
had been swivelling
we
had been swivelling
they
had been swivelling
PRESENT
I
swivel
you
swivel
he/she/it
swivels
we
swivel
they
swivel
PRESENT CONTINUOUS
I
am swivelling
you
are swivelling
he/she/it
is swivelling
we
are swivelling
they
are swivelling
PRESENT PARTICIPLE
swivelling
PRESENT PERFECT
I
have swivelled
you
have swivelled
he/she/it
has swivelled
we
have swivelled
they
have swivelled
I
have swiveled, have swivelled
we
have swiveled, have swivelled
you
have swiveled, have swivelled
he/she/it
has swiveled, has swivelled
they
have swiveled, have swivelled
PRESENT PERFECT CONTINUOUS
I
have been swivelling
you
have been swivelling
he/she/it
has been swivelling
we
have been swivelling
they
have been swivelling
I
am swiveling, am swivelling
we
are swivelling, are swiveling
you
are swivelling, are swiveling
he/she/it
is swiveling, is swivelling
they
are swivelling, are swiveling
I
was swivelling, was swiveling
we
were swiveling, were swivelling
you
were swiveling, were swivelling
he/she/it
was swivelling, was swiveling
they
were swiveling, were swivelling
I
will be swiveling, will be swivelling
we
will be swiveling, will be swivelling
you
will be swiveling, will be swivelling
he/she/it
will be swiveling, will be swivelling
they
will be swiveling, will be swivelling
I
have been swiveling, have been swivelling
we
have been swiveling, have been swivelling
you
have been swivelling, have been swiveling
he/she/it
has been swiveling, has been swivelling
they
have been swivelling, have been swiveling
I
had been swivelling, had been swiveling
we
had been swivelling, had been swiveling
you
had been swivelling, had been swiveling
he/she/it
had been swivelling, had been swiveling
they
had been swivelling, had been swiveling
I
will have been swiveling, will have been swivelling
we
will have been swiveling, will have been swivelling
you
will have been swiveling, will have been swivelling
he/she/it
will have been swiveling, will have been swivelling
they
will have been swiveling, will have been swivelling
I
would have swivelled, would have swiveled
we
would have swivelled, would have swiveled
you
would have swivelled, would have swiveled
he/she/it
would have swivelled, would have swiveled
they
would have swivelled, would have swiveled
I
would be swivelling, would be swiveling
we
would be swivelling, would be swiveling
you
would be swivelling, would be swiveling
he/she/it
would be swivelling, would be swiveling
they
would be swivelling, would be swiveling
I
would have been swivelling, would have been swiveling
we
would have been swivelling, would have been swiveling
you
would have been swivelling, would have been swiveling
he/she/it
would have been swivelling, would have been swiveling
they
would have been swivelling, would have been swiveling