What does it mean?

1. : mournful. especially : exaggeratedly or affectedly (see affected entry 2 sense 1a) mournful. dark, dramatic and lugubrious brooding V. S. Pritchett. the tour de force of lugubrious cliche is ten times longer than this review Martin Amis.27 May 2023

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Lugubrious Definition & Meaning – Merriam-Webster