Emily Dickinson Lexicon

specious, adj. [L. 'fair, beautiful'.]

1. Pleasing; showy; attractive but deceptive; good in appearance but superficial; suggesting a quality other than what appears; [word play on “species”] characteristic of a creature; belonging to a particular thing.
2. Presentable; conspicuous; [word play; Johnson has “spacious”] suitable in size; having enough space to move in; [fig.] fitting; accessible; handy; convenient; easy to live with.