Pronunciation: [ pith-ee ]
Definition: adjective
brief, forceful, and meaningful in expression; full of vigor, substance, or meaning; terse; forcible

Origin: Middle English
Etymology: dating back to 1300–50; see origin at pith, -y
Usage:

Synonyms:
cogent
concise
laconic
succinct
terse
trenchant
Antonyms:
impotent
lengthy
long-winded
weak
wordy
verbose
Example:
She stood in front of the group and provided a pithy observation.