Words related to *deik-
1540s, "to disown, disinherit (children)," from Latin abdicatus, past participle of abdicare "to disown, disavow, reject" (specifically abdicare magistratu "renounce office"), literally "proclaim as not belonging to one," from ab "off, away from" (see ab-) + dicare "proclaim" (from PIE root *deik- "to show," also "pronounce solemnly," and see diction). Meaning "divest oneself of office, privilege, etc., before the term expires" first recorded 1610s in English (it was in classical Latin). Related: Abdicated; abdicating.
1550s, "a disowning," from Latin abdicationem (nominative abdicatio) "voluntary renunciation, abdication," noun of action from past-participle stem of abdicare "disown, disavow, reject," from ab "off, away from" (see ab-) + dicare "proclaim" (from PIE root *deik- "to show," also "pronounce solemnly," and see diction). Sense of "resignation of inherent sovereignty" is from 1680s.
late Old English betacnian "to denote, to mean, signify; be a visible sign or emblem of," from be- + Old English tacnian "to signify," from tacn "sign" (see token) or from Proto-Germanic *taiknōjanan. From c. 1200 as "to augur, presage, portend," also "be or give evidence of." Related: Betokened; betokening.
mid-14c., condicioun, "particular mode of being of a person or thing," also "a requisite or prerequisite, a stipulation," from Old French condicion "stipulation; state; behavior; social status" (12c., Modern French condition), from Medieval Latin conditionem (nominative conditio), properly condicio "agreement; stipulation; the external position, situation, rank, place, circumstances" of persons, "situation, condition, nature, manner" of things, from condicere "to speak with, talk together, agree upon," in Late Latin "consent, assent," from assimilated form of com "together" (see con-) + dicere "to speak" (from PIE root *deik- "to show," also "pronounce solemnly").
Classical Latin condicio was confused in Late Latin with conditio "a making," from conditus, past participle of condere "to put together." The sense evolution in Latin apparently was from "stipulation" to "situation, mode of being."
Meaning "rank or state with respect to ordered society" is from late 14c. in English. From the notion of "prerequisite" comes the sense of "a restricting or limiting circumstance" (late 14c.). Also in Middle English "personal character, disposition" (mid-14c.).
1570s, "speak against, oppose" (a sense now obsolete); 1580s, "assert the contrary or opposite of," from Latin contradictus, past participle of contradicere, in classical Latin contra dicere "to speak against," from contra "against" (see contra (prep., adv.)) + dicere "to say, speak" (from PIE root *deik- "to show," also "pronounce solemnly").
Meaning "deny the words or assertions of, speak in contradiction" is from c. 1600. Of statements, etc., "be inconsistent with," c. 1600. Related: Contradicted; contradicting; contradictive.