The word levelled is derived from the base word level, which in turn comes from the Latin word libella. Libella referred to a tool used for determining if something is perfectly horizontal or flat. The word evolved into levelle in Old French, and later became level in Middle English. The addition of the suffix -ed creates the past tense form, levelled.
CONDITIONAL
I
would levelled
you
would levelled
he/she/it
would levelled
we
would levelled
they
would levelled
I
would level
we
would level
you
would level
he/she/it
would level
they
would level
CONDITIONAL CONTINUOUS
I
would be levelling
you
would be levelling
he/she/it
would be levelling
we
would be levelling
they
would be levelling
CONDITIONAL PERFECT
I
would have levelled
you
would have levelled
he/she/it
would have levelled
we
would have levelled
they
would have levelled
CONDITIONAL PERFECT CONTINUOUS
I
would have been levelling
you
would have been levelling
he/she/it
would have been levelling
we
would have been levelling
they
would have been levelling
FUTURE
I
will level
you
will level
he/she/it
will level
we
will level
they
will level
FUTURE CONTINUOUS
I
will be levelling
you
will be levelling
he/she/it
will be levelling
we
will be levelling
they
will be levelling
FUTURE PERFECT
I
will have levelled
you
will have levelled
he/she/it
will have levelled
we
will have levelled
they
will have levelled
I
will have levelled, will have leveled
we
will have levelled, will have leveled
you
will have levelled, will have leveled
he/she/it
will have levelled, will have leveled
they
will have levelled, will have leveled
FUTURE PERFECT CONTINUOUS
I
will have been levelling
you
will have been levelling
he/she/it
will have been levelling
we
will have been levelling
they
will have been levelling
IMPERATIVE
you
level
we
let´s level
to level
PAST
I
levelled
you
levelled
he/she/it
levelled
we
levelled
they
levelled
I
levelled, leveled
we
levelled, leveled
you
levelled, leveled
he/she/it
levelled, leveled
they
levelled, leveled
PAST CONTINUOUS
I
was levelling
you
were levelling
he/she/it
was levelling
we
were levelling
they
were levelling
PAST PARTICIPLE
levelled
PAST PERFECT
I
had levelled
you
had levelled
he/she/it
had levelled
we
had levelled
they
had levelled
I
had levelled, had leveled
we
had levelled, had leveled
you
had levelled, had leveled
he/she/it
had levelled, had leveled
they
had levelled, had leveled
PAST PERFECT CONTINUOUS
I
had been levelling
you
had been levelling
he/she/it
had been levelling
we
had been levelling
they
had been levelling
PRESENT
I
level
you
level
he/she/it
levels
we
level
they
level
PRESENT CONTINUOUS
I
am levelling
you
are levelling
he/she/it
is levelling
we
are levelling
they
are levelling
PRESENT PARTICIPLE
levelling
PRESENT PERFECT
I
have levelled
you
have levelled
he/she/it
has levelled
we
have levelled
they
have levelled
I
have leveled, have levelled
we
have leveled, have levelled
you
have leveled, have levelled
he/she/it
has leveled, has levelled
they
have leveled, have levelled
PRESENT PERFECT CONTINUOUS
I
have been levelling
you
have been levelling
he/she/it
has been levelling
we
have been levelling
they
have been levelling
I
am leveling, am levelling
we
are levelling, are leveling
you
are levelling, are leveling
he/she/it
is leveling, is levelling
they
are levelling, are leveling
I
was levelling, was leveling
we
were leveling, were levelling
you
were leveling, were levelling
he/she/it
was levelling, was leveling
they
were leveling, were levelling
I
will be leveling, will be levelling
we
will be leveling, will be levelling
you
will be leveling, will be levelling
he/she/it
will be leveling, will be levelling
they
will be leveling, will be levelling
I
have been leveling, have been levelling
we
have been leveling, have been levelling
you
have been levelling, have been leveling
he/she/it
has been leveling, has been levelling
they
have been levelling, have been leveling
I
had been levelling, had been leveling
we
had been levelling, had been leveling
you
had been levelling, had been leveling
he/she/it
had been levelling, had been leveling
they
had been levelling, had been leveling
I
will have been leveling, will have been levelling
we
will have been leveling, will have been levelling
you
will have been leveling, will have been levelling
he/she/it
will have been leveling, will have been levelling
they
will have been leveling, will have been levelling
I
would have levelled, would have leveled
we
would have levelled, would have leveled
you
would have levelled, would have leveled
he/she/it
would have levelled, would have leveled
they
would have levelled, would have leveled
I
would be levelling, would be leveling
we
would be levelling, would be leveling
you
would be levelling, would be leveling
he/she/it
would be levelling, would be leveling
they
would be levelling, would be leveling
I
would have been levelling, would have been leveling
we
would have been levelling, would have been leveling
you
would have been levelling, would have been leveling
he/she/it
would have been levelling, would have been leveling
they
would have been levelling, would have been leveling