The best replacement for pajama is pajamas.

The best alternatives to pajama are rated as following:
★★★★★  pajamas
★★★★★  pyjama

Your alternative for pajama is not listed? Suggest!
Speaking about pajama, one probably shouldn't forget about nehru jacket.

Other search terms related to pajama and their ratings are:
★★★★★ nehru jacket
★★ long shirt
★ long shirts
You have in mind a companion for pajama and it is not yet here? Propose!



Google Trends

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pajama
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pyjama