Sitting or standing with poor posture, usually with your shoulders rounded forward and head dropped.
From 'slouch' (origin uncertain, possibly from Scandinavian languages meaning to droop or bend). It may also be connected to words meaning stoop or bend. The '-ing' forms the present participle, showing an ongoing action.
Slouching actually sends signals to your brain that make you feel more depressed and anxious—researchers found that people who slouch have worse moods than people who sit up straight, so posture and emotions are physically connected!
Complete word intelligence in one call. Free tier — 50 lookups/day.