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

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