*dicate

abdicate: After the president abdicated, he was soon found murdered at his home.

adjudicate: ju~jury, related to court, hence to abjudicate is to settle finally in a court
The bribery involved so much interest that it was sent to a special commitee to abjudicate.
Derivatives: adjudication, adjudicative, adjudicatory, adjudicator

coindicate: co~provide conjoint indication
The turmoil coindicated the following revolution.

contraindicate: contra~ to indicate the inadviability of (a medical treatment)

dedicate: He dedicated himself in the theory of number all his life.

dijudicate:

eradicate: era~erase, to eradicate is to erase something including its root
The grasshppers were eradicated by introducing birds and other natural enemies.

indicate: We need an saliant indicator telling us when the fire occurs.

irradicate:

medicate: to treat with medcine
Derivatives: medication, medicative

mendicate: to beg

predicate: to assert
Derivatives: predication, predicational, predicative
He predicates his arguments on facts.

preindicate: pre~

prejudicate: pre~

premedicate: pre~

radicate: to root deeply
He is the one who radicated the theory of relativity.

rededicate: re~

revendicate: to demand a restoration of territory
We are now revendicating, for Taiwans has been separated from us for more than 50 years.

revindicate: re~

syndicate: to union as a syndicate (-,-)

vindicate: to clear accusation
Our society permits people to sue for libel so that they may vindicate their reputations.