Ant. Preceding or succeeding.
Cogent. Forcible, powerful, effective, irresistible, convincing, conclusive, persuasive, potent, urgent.
Ant. Weak, feeble, powerless, ineffectual.
Cogitate. Meditate, think, reflect, consider, ponder, contemplate.
Ant. Dream, idle, wish.
Cognizance. Knowledge, observation, notice, recognition, experience.
Ant. Ignorance, oversight, neglect.
Coherent. Compact, consecutive, close, logical, consistent.
Ant. Rambling, loose, discursive, aberrant.
Coincidence. Chance, fortuity, harmony, agreement, casualty, concurrence, contemporaneousness.