intransitive verb conspired -·spired′, conspiring -·spir′·ing

1. to plan and act together secretly, esp. in order to commit a crime
2. to combine or work together for any purpose or effect events conspired to ruin him

Etymology: ME conspiren < OFr conspirer < L conspirare, to breathe together, agree, unite < com-, together + spirare, to breathe: see spirit

transitive verb