The word "nonsensicalities" refers to something that lacks logic, coherence or reason. Its antonyms are rationality, coherence, sensibility, and clear thinking. Rationality refers to thinking logically, making decisions based on reasoning and sound judgment. Coherence, on the other hand, means something that is clear and understandable, with a logical flow of ideas. Sensibility is the capacity to understand and judge things in a reasonable and rational way. Clear thinking refers to lucidity, direction, and rationality. In essence, the antonyms for nonsensicalities are qualities that emphasize reason, logic, and understanding, and they are essential in making informed decisions and communicating effectively.