The word "chirrup" originated in Middle English as chirpen, which came from the Old English word cearpian. The Middle English form represented the sound of a bird’s call or the noise made by an insect. It is believed to be onomatopoeic, imitating the sound of a bird’s chirping or the sound made by rubbing together certain insect wings or legs quickly. Over time, the spelling evolved into "chirrup" to better reflect its pronunciation.
CONDITIONAL PERFECT
I
would have chirruped
you
would have chirruped
he/she/it
would have chirruped
we
would have chirruped
they
would have chirruped
I
would have chirrup
you
would have chirrup
he/she/it
would have chirrup
we
would have chirrup
they
would have chirrup
CONDITIONAL PERFECT PROGRESSIVE
I
would have been chirruping
you
would have been chirruping
he/she/it
would have been chirruping
we
would have been chirruping
they
would have been chirruping
CONDITIONAL PRESENT
I
would chirrup
you
would chirrup
he/she/it
would chirrup
we
would chirrup
they
would chirrup
CONDITIONAL PRESENT PROGRESSIVE
I
would be chirruping
you
would be chirruping
he/she/it
would be chirruping
we
would be chirruping
they
would be chirruping
FUTURE
I
will chirrup
you
will chirrup
he/she/it
will chirrup
we
will chirrup
they
will chirrup
FUTURE CONTINUOUS
I
will be chirruping
you
will be chirruping
he/she/it
will be chirruping
we
will be chirruping
they
will be chirruping
FUTURE PERFECT
I
will have chirruped
you
will have chirruped
he/she/it
will have chirruped
we
will have chirruped
they
will have chirruped
I
will have chirrupped
we
will have chirrupped
you
will have chirrupped
he/she/it
will have chirrupped
they
will have chirrupped
FUTURE PERFECT CONTINUOUS
I
will have been chirruping
you
will have been chirruping
he/she/it
will have been chirruping
we
will have been chirruping
they
will have been chirruping
IMPERATIVE
you
chirrup
we
let´s chirrup
to chirrup
PAST
I
chirrupped
we
chirrupped
you
chirrupped
he/she/it
chirrupped
they
chirrupped
PAST CONTINUOUS
I
was chirruping
you
were chirruping
he/she/it
was chirruping
we
were chirruping
they
were chirruping
PAST PARTICIPLE
chirruped
PAST PERFECT
I
had chirruped
you
had chirruped
he/she/it
had chirruped
we
had chirruped
they
had chirruped
I
had chirrupped
we
had chirrupped
you
had chirrupped
he/she/it
had chirrupped
they
had chirrupped
PAST PERFECT CONTINUOUS
I
had been chirruping
you
had been chirruping
he/she/it
had been chirruping
we
had been chirruping
they
had been chirruping
PRESENT
I
chirrup
you
chirrup
he/she/it
chirrups
we
chirrup
they
chirrup
PRESENT CONTINUOUS
I
am chirruping
you
are chirruping
he/she/it
is chirruping
we
are chirruping
they
are chirruping
PRESENT PARTICIPLE
chirruping
PRESENT PERFECT
I
have chirruped
you
have chirruped
he/she/it
has chirruped
we
have chirruped
they
have chirruped
I
have chirrupped
we
have chirrupped
you
have chirrupped
he/she/it
has chirrupped
they
have chirrupped
PRESENT PERFECT CONTINUOUS
I
have been chirruping
you
have been chirruping
he/she/it
has been chirruping
we
have been chirruping
they
have been chirruping
PRESENT SUBJUNCTIVE
he/she/it
chirrup
SIMPLE PAST
I
chirruped
you
chirruped
he/she/it
chirruped
we
chirruped
they
chirruped
I
am chirrupping
we
are chirrupping
you
are chirrupping
he/she/it
is chirrupping
they
are chirrupping
I
was chirrupping
we
were chirrupping
you
were chirrupping
he/she/it
was chirrupping
they
were chirrupping
I
will be chirrupping
we
will be chirrupping
you
will be chirrupping
he/she/it
will be chirrupping
they
will be chirrupping
I
have been chirrupping
we
have been chirrupping
you
have been chirrupping
he/she/it
has been chirrupping
they
have been chirrupping
I
had been chirrupping
we
had been chirrupping
you
had been chirrupping
he/she/it
had been chirrupping
they
had been chirrupping
I
will have been chirrupping
we
will have been chirrupping
you
will have been chirrupping
he/she/it
will have been chirrupping
they
will have been chirrupping
I
would have chirrupped
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would have chirrupped
you
would have chirrupped
he/she/it
would have chirrupped
they
would have chirrupped
I
would be chirrupping
we
would be chirrupping
you
would be chirrupping
he/she/it
would be chirrupping
they
would be chirrupping
I
would have been chirrupping
we
would have been chirrupping
you
would have been chirrupping
he/she/it
would have been chirrupping
they
would have been chirrupping