countersing

As a noun terms

is .

As a verb countersing is

(biology|of a bird) to sing in response to the song of another.

As verbs the difference between countersing and countersung

is that countersing is to sing in response to the song of another while countersung is past participle of countersing.

As verbs the difference between countersing and countersign

is that countersing is (biology|of a bird) to sing in response to the song of another while countersign is to sign on the opposite side of (an instrument or writing).

As a noun countersign is

a second signature added to a document to affirm the validity of the signature of the first person.

As verbs the difference between countersuing and countersing

is that countersuing is while countersing is (biology|of a bird) to sing in response to the song of another.

As verbs the difference between countersink and countersing

is that countersink is to create such a conical recess while countersing is (biology|of a bird) to sing in response to the song of another.

As a noun countersink

is a conical recess, typically machined around a hole to admit a screw so that it sits flush with a surface.

As verbs the difference between countersang and countersing

is that countersang is past tense of countersing while countersing is to sing in response to the song of another.

As verbs the difference between countersing and countering

is that countersing is (biology|of a bird) to sing in response to the song of another while countering is .

As a noun response

is (senseid)an answer or reply, or something in the nature of an answer or reply.

As a verb countersing is

(biology|of a bird) to sing in response to the song of another.

As verbs the difference between sing and countersing

is that sing is to produce musical or harmonious sounds with one’s voice while countersing is to sing in response to the song of another.

As a noun sing

is a gathering for the purpose of singing songs.