Instead of "were inclined to think," one can opt for contrasting phrases like "were skeptical of," "did not believe," "questioned the validity of," "opposed the idea of," or "were hesitant to accept." These expressions suggest a level of doubt, uncertainty, and even disbelief towards a particular notion. Additionally, words like "disinclined," "resistant," or "unconvinced" can also convey a sense of resistance, indicating a reluctance or unwillingness to adopt a certain perspective. By using antonyms for "were inclined to think," one can vary their language and convey a more nuanced understanding of their beliefs and attitudes towards a subject.