different between trepidate vs trepidatory

English

Etymology

Either back-formed from, or otherwise related to, trepidation.

Verb

trepidate (third-person singular simple present trepidates, present participle trepidating, simple past and past participle trepidated)

1. (uncommon, transitive) To cause to experience trepidation.
   • 1878, a Memphis newspaper, quoted in 2015, John H. Ellis, Yellow Fever and Public Health in the New South, University Press of Kentucky (?ISBN), page 51:

     […] “A little trepidated, if not consternated, they lifted him from his close confinement and put him to bed.”

   • 2016, Debby Holt, The Soulmate, Simon and Schuster (?ISBN):

     If so, he was now deeply trepidated. He had almost hoped she would not live up to expectations. She might have lost her looks, acquired irritating habits, even proved to be unpleasant. But here she was, still beautiful and charming.

2. (uncommon, intransitive) To experience trepidation.
   • 2007, Jack Womack, Elvissey: A Novel, Grove/Atlantic, Inc. (?ISBN):

     I trepidated that evening upon entering their apartment; his wife, we were told, was from that other world, and no one briefed us as to how she would show.

Italian

Verb

trepidate

1. second-person plural present indicative of trepidare
2. second-person plural imperative of trepidare
3. feminine plural of trepidato

Latin

Verb

trepid?te

1. second-person plural present active imperative of trepid?

English

Adjective

trepidatory (comparative more trepidatory, superlative most trepidatory)

1. That trepidates, or that causes trepidations.
   • 1953, Charles Egerton Osgood, Method and Theory in Experimental Psychology

     Unfortunately, like Guthrie he has never given a formal statement of his principles, and it is therefore up to the reader to ferret out these things for himself — always a trepidatory procedure.

   • 2003, Laurence Gardner, Realm of the Ring Lords

     This was all very good news for the Church bishops because the shapeshifting werewolf had a limited trepidatory function, especially in places like England where wolves were generally unknown, although some existed then to the north in Scotland.
2. Of an earthquake, having a vertical, up-and-down motion, as opposed to a horizontal, side-to-side motion.
   • 1843, Captin Sir Edward Belcher RN, Narrative of a Voyage Round the World

     This [earthquake] was felt at Mexico at precisely the same hour, lasting there about one minute and a half, the motion there being undulatory, but at Acapulco trepidatory.

   • 1882, Knowledge, volume 1

     The most severe shock lasted for 70 seconds, and combined oscillatory, trepidatory, and rotatory movement.

   • 1995, Elena Poniatowska, Aurora Camacho de Schmidt and Arthur Schmidt, Nothing, Nobody: The Voices of the Mexico City Earthquake

     The particular trepidatory and oscillatory patterns arising from the lake bed especially afflicted high-rise buildings between six and fifteen stories.