In grammar, the essive case, or similaris case, (abbreviated ) is a grammatical case. The essive case on a noun can express it as a definite period of time during which something happens or during which a continuous action was completed. It can also denote a form as a temporary location, state of being, or character in which the subject was at a given time. The latter meaning is often described as the equivalent of the English phrase "as a __".
Finnish
In Finnish, it is marked by adding "/" (depending on the vowel harmony) to the stem of the noun. That can be seen in the following example:
:Example: ' "I bought the pearl thinking it was genuine [but later found out that it was not]." Marking of the case in Estonian denotes the capacity in which the subject acts. The essive case is used for indicating "states of being" but not of "becoming", which is instead marked by the translative case, the elative case, or the nominative case.