The best replacement for delay pedal is reverb.

The best alternatives to delay pedal are rated as following:
★★★★★  reverb
★★★  reverb pedal
★  analog delay pedal

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Speaking about delay pedal, one probably shouldn't forget about reverb.

Other search terms related to delay pedal and their ratings are:
★★★★★ reverb
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delay pedal
reverb
reverb pedal