INTERJECTION
interjection, interposition, interpolation, interpellation
(noun) the action of interjecting or interposing an action or remark that interrupts
ejaculation, interjection
(noun) an abrupt emphatic exclamation expressing emotion
Source: WordNet® 3.1
Etymology
Noun
interjection (plural interjections)
(grammar) An exclamation or filled pause; a word or phrase with no particular grammatical relation to a sentence, often an expression of emotion.
An interruption; something interjected
Synonyms
• (grammar): exclamation
Source: Wiktionary
In`ter*jec"tion, n. Etym: [L. interjectio: cf. F. interjection. See
Interject.]
1. The act of interjecting or throwing between; also, that which is
interjected.
The interjection of laughing. Bacon.
2. (Gram.)
Definition: A word or form of speech thrown in to express emotion or
feeling, as O! Alas! Ha ha! Begone! etc. Compare Exclamation.
An interjection implies a meaning which it would require a whole
grammatical sentence to expound, and it may be regarded as the
rudiment of such a sentence. But it is a confusion of thought to rank
it among the parts of speech. Earle.
How now! interjections Why, then, some be of laughing, as, ah, ha,
he! Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition