suppositional（adj.）
英 [ˌsʌpə'zɪʃənl] 美 [ˌsʌpə'zɪʃənəl]
"involving or based on supposition; supposed, hypothetical," 1660s, from supposition + -al (1). Also in same sense was suppositary (1808). Suppositative "belonging to a supposition" is attested from 1650s.
该词起源时间：1660年代