More frowsy; more musty, stuffy, or unkempt in appearance.
Comparative form of 'frowsy' (or 'frowzy'), which comes from Middle English/Early Modern English, possibly related to Old Norse or dialectal terms for slovenliness, with '-er' marking the comparative degree.
The word 'frowsy' is wonderfully specific—it captures that particular smell and feel of a stuffy room, musty clothes, or an unkempt appearance, all in one word, which English is especially good at.
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