Synonyms of open-and-shut

1 Syllable

plain, iced, clear

2 Syllables

clear-cut, plainest, simple, glaring, cinched, easy, obvious, plainer

3 Syllables

explicit, routine, straightforward, apparent, assured, guaranteed, conspicuous, evident

4 Syllables

undeniable, undisguised, ordinary, conclusive, self-evident

5 Syllables

unmistakable, indisputable, distinguishable

6 Syllables

self-explanatory