Emily Dickinson Lexicon

CON-SPIRE, v.i. [L. conspiro, to plot; con and spiro, to breathe. But the primary sense is to throw, to wind; hence spira, a fold, circle, wreath or band; and the sense of the verb is, to breathe together, or more probably, to wind or band together.]

1. To agree, by oath, covenant, or otherwise, to commit a crime; to plot; to hatch treason. The servants of Ammon conspired against him, and slew the king in his own house. – 2 Kings xxi. They conspired against Joseph to slay him. – Gen. xxxvii.
2. In law, to agree falsely and maliciously to indict an innocent person of felony.
3. To agree; to concur to one end; as, all things conspire to make us prosperous. The press, the pulpit, and the stage, / Conspire to censure, and expose our age. – Roscommon.