COLLUDE
conspire, collude
(verb) act in unison or agreement and in secret towards a deceitful or illegal purpose; “The two companies conspired to cause the value of the stock to fall”
Source: WordNet® 3.1
Etymology
Verb
collude (third-person singular simple present colludes, present participle colluding, simple past and past participle colluded)
(intransitive) to act in concert with; to conspire
Synonyms
• to be in cahoots
• conspire
• plot
• scheme
Anagrams
• loculed
Source: Wiktionary
Col*lude", v. i. [imp. & p. p. Colluded; p. pr. & vb. n. Colluding.]
Etym: [L. colludere, -lusum; col- + ludere to play. See Ludicrous.]
Definition: To have secretly a joint part or share in an action; to play
into each other's hands; to conspire; to act in concert.
If they let things take their course, they will be represented as
colluding with sedition. Burke.
Source: Webster’s Unabridged Dictionary 1913 Edition