Definition of parenthetical:
articulate, approach, declamatory, circuitous, episodic, diffuse, conversational, chatty, incidental, incident, excursive, digressive, economical, tangential, related, parenthetic, clean, parenthetical expression, digressive, rambling, discursive, subordinate, intermediate, crisp.
extraneous (part of speech: adjective)
- "Slips of Speech", John H. Bechtel.
The dogs, fully occupied with each other, and with discursive raids right and left of the road, and parenthetical rushes in various directions for their own special delectation, would sometimes, returning to us at full gallop, tumble over poor puss and roll her unceremoniously down in their headlong career.- "Records of a Girlhood", Frances Ann Kemble.
- "Expositions of Holy Scripture: Romans Corinthians (To II Corinthians, Chap. V)", Alexander Maclaren.