whatchamacallit

As nouns the difference between whatchamacallit and null

is that whatchamacallit is ''a metasyntactic term used for any object whose actual name the speaker doesn’t know or can’t remember while null is zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As a noun whatchamacallit is

''a metasyntactic term used for any object whose actual name the speaker doesn’t know or can’t remember.

As nouns the difference between whachamacallit and whatchamacallit

is that whachamacallit is an alternative spelling of whatchamacallit while whatchamacallit is ''A metasyntactic term used for any object whose actual name the speaker doesn’t know or can’t remember.

As nouns the difference between taxonomy and whatchamacallit

is that taxonomy is the science or the technique used to make a classification while whatchamacallit is ''a metasyntactic term used for any object whose actual name the speaker doesn’t know or can’t remember.

Whatchamacallit is a related term of whatsername.

As nouns the difference between whatchamacallit and whatsername

is that whatchamacallit is ''a metasyntactic term used for any object whose actual name the speaker doesn’t know or can’t remember while whatsername is (colloquial) a placeholder for the name of a woman whose name the speaker can not bring to mind.

Whatsisname is a related term of whatchamacallit.

As nouns the difference between whatchamacallit and whatsisname

is that whatchamacallit is ''A metasyntactic term used for any object whose actual name the speaker doesn’t know or can’t remember while whatsisname is a placeholder for the name of a man whose name the speaker can not bring to mind.

Whatchamacallit is a synonym of jiggambob.

As nouns the difference between whatchamacallit and jiggambob

is that whatchamacallit is ''a metasyntactic term used for any object whose actual name the speaker doesn’t know or can’t remember while jiggambob is something that one does not know the name of.