The term tautologic refers to something that needlessly repeats itself or is redundant in nature. Its antonyms, on the other hand, relate to terms that are concise, compact, and precise. Words like succinct, brief, short, and concise all convey the opposite meaning of tautologic. Additionally, the term precise implies a certain level of accuracy and clarity, which is the exact opposite of tautologic since the latter involves unnecessary repetition. Another antonym for tautologic is the word straightforward, which illustrates the notion of simplicity and clarity. Altogether, these antonyms mirror the idea of brevity and conciseness, and act as a counterpoint to the word tautologic.