Antonyms for the phrase "be inclined to think" include "doubtful," "skeptical," and "uncertain." These words all convey a sense of hesitation or lack of conviction in one's beliefs. Alternatively, synonyms for "be inclined to think" include "presume," "suppose," and "surmise," which suggest a more confident assumption or belief. Choosing the right words to express one's thoughts is crucial for effective communication, as different words can convey different levels of certainty or doubt. By understanding the nuances of language, we can better convey our intended message and ensure effective communication with others.