| plaguey | (adjective) causing irritation or annoyance | Synonyms: annoying, bothersome, galling, irritating, nettlesome, pesky, pestering, pestiferous, plaguy, teasing, vexatious, vexing |
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| (adjective) likely to spread and cause an epidemic disease | Synonyms: pestiferous, pestilent, pestilential |
| vague | (adjective) not precisely limited, determined, or distinguished | Synonyms: undefined |
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| (adjective) lacking clarity or distinctness | Synonyms: dim, faint, shadowy, wispy |
| (adjective) not clearly expressed or understood | Synonyms: obscure |