religious about doing

religious about (something)

Strictly adherent to doing or completing something in the proper way or on time. Tom's religious about sorting the recycling into the correct bins. I know she's religious about her skincare routine, so I've stopped trying to rush her in the morning. It got a bit annoying with how religious he was about keeping the carpets clean.
See also: religious
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

religious about doing something

Fig. strict about something; conscientious about something. Bob is religious about paying his bills on time. Max tries to be religious about being polite to everyone.
See also: religious
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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