I don't rightly know

I don't rightly know

I'm unsure about something; I don't have a response or suggestion right now. I don't rightly know what they're doing here—I didn't invite them, I swear! I don't rightly know what he was thinking when he made such a ridiculous statement.
See also: know, rightly
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

I don't rightly know.

Rur. I do not know. Tom: When will Joe be getting back? Charlie: I don't rightly know. Jane: What's the difference between a first cousin and a first cousin once removed? Mary: I don't rightly know.
See also: know, rightly
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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