to tremble ; a Teut. TITTERN, tremere, both from the sound produced. This is a word of general use. My heart twitters ; I am all in a twitter. To TWITTER thread or yarn, is to spin it uneven ; generally used also in this sense.
·vt To utter with a twitter. II. Twitter ·noun A slight trembling or agitation of the nerves. III....
Webster's Dictionary of the English Language
All in a twitter; in a fright. Twittering is also the note of some small birds, such as the robin, &...
Dictionary of The Vulgar Tongue by Francis Grose