early 17th century: from Latin supposititius (from supponere 'to substitute') + -ous.
- More example sentences
- It was in no way contingent on Adam's thought, but supposititiously self-created.
- I think that your fossils are very interesting and valuable, not because they are old, but because they indicate that supposititiously ancient rocks may be recent.
Definition of supposititious in:
- The British & World English dictionary