Used to form adjectives meaning of or relating to corresponding nouns ending in -istic or -ist; most often redundant with respect to the latter which can also become adjectives through the addition of -ic alone, or with no change to the root noun. Hence, theist, theistic and theistical can all be used as the adjective form of theism.

Used to form adverbs describing action in the manner of the root adjective; use is identical irrespective of whether the root adjective ends with -istic or -istical.

(US, law) Initialism of Intermodal Surface Transportation Efficiency Act.

(Internet slang) Initialism of It seems to me.

Of or pertaining to Istanbul

(demonym) a person from or living in Istanbul

(anatomy) An elongated, narrow part of the uterus at the junction of the body of the uterus and the cervix.

Pronunciation spelling of historical.

plural of istle

Alternative form of ixtle