perspicuous

From Latin perspicuus, in turn from perspiciō (“see through”).

• (Received Pronunciation) IPA^(key): /pəˈspɪkjuːəs/
• (General American) IPA^(key): /pɚˈspɪkjuːəs/

perspicuous (comparative more perspicuous, superlative most perspicuous)

1. Clearly expressed, easy to understand; lucid.
   • 1776, Adam Smith, The Wealth of Nations, Book I, Chapter 4,

     I am always willing to run some hazard of being tedious in order to be sure that I am perspicuous […]

2. (logic) Of a language or notation, such as that of formal propositional calculus: where the process of inference from premises to conclusion is explicitly laid out.
3. (rare) Transparent; translucent.

• (clearly expressed): See also Thesaurus:comprehensible
• (transparent): See also Thesaurus:transparent

• (clearly expressed): See also Thesaurus:incomprehensible
• (transparent): See also Thesaurus:opaque
• imperspicuous

• perspicuously
• perspicuousness

• “perspicuous” in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, 1989, →ISBN.