expatiate

intr.v., -at·ed, -at·ing, -ates.

1. To speak or write at length: expatiated on the subject until everyone was bored.
2. To wander freely.

[Latin expatiārī, expatiāt- : ex-, ex- + spatiārī, to spread (from spatium, space).]

expatiation ex·pa'ti·a'tion n.

(ek-SPAY-shee-ayt)

verb intr.
1. To speak or write at length.
2. To move about freely.

Etymology
From Latin exspatiatus, past participle of exspatiari (to wander or digress), from ex- (out) + spatiari (to walk about), from spatium (space)

Usage
"I spent part of the day of the debate watching a parade of talking heads expatiate endlessly on how dire was the need for Obama to go macho." — Joe Klein; Hit Her Again! Time (New York); Oct 31, 2007.

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verb

To express at greater length or in greater detail: amplify, develop, dilate, elaborate, enlarge, expand, labor. See explain/baffle.

IN BRIEF: To speak or write in great detail.

That scientist will expatiate about the newly released study that supports his original conclusions.

Note: click on a word meaning below to see its connections and related words.

The verb has one meaning:

Meaning #1: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
  Synonyms: elaborate, lucubrate, exposit, enlarge, flesh out, expand, expound, dilate

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