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expatiate

[ik-spey-shee-eyt] /ɪkˈspeɪ ʃiˌeɪt/
verb (used without object), expatiated, expatiating.
1.
to enlarge in discourse or writing; be copious in description or discussion:
to expatiate upon a theme.
2.
Archaic. to move or wander about intellectually, imaginatively, etc., without restraint.
Origin
1530-1540
1530-40; < Latin expatiātus past participle of ex(s)patiārī to wander, digress, equivalent to ex- ex-1 + spatiārī to walk about, derivative of spatium space; see -ate1
Related forms
expatiation, noun
expatiator, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for expatiate

expatiate

/ɪkˈspeɪʃɪˌeɪt/
verb (intransitive)
1.
foll by on or upon. to enlarge (on a theme, topic, etc) at length or in detail; elaborate (on)
2.
(rare) to wander about
Derived Forms
expatiation, noun
expatiator, noun
Word Origin
C16: from Latin exspatiārī to digress, from spatiārī to walk about
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for expatiate
expatiate
1530s, "walk about, roam freely," from L. expatiatus, exspatiatus, pp. of expatiari, exspatiari "wander, digress," from ex- "out" + spatiari "to walk, spread out," from spatium (see space). Meaning "talk or write at length" is 1610s.
Online Etymology Dictionary, © 2010 Douglas Harper
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