Jétais
Jétais is not a standard spelling in French. The correct first-person singular imperfect of être is j’étais, with an apostrophe. The form jétais may appear as a typographical error, in casual writing, or as a stylized variant, but it is not recognized as a separate word in standard French.
In grammar, j’étais is the imperfect (imparfait) of être. The imperfect describes ongoing states, habitual actions,
The imperfect of être is part of a larger system of verb conjugation in French. Other forms
See also: French verb conjugation, the verb être, and the imparfait. In standard usage, one should write