fiillerde

Fiillerde is a Turkish word formed by the base noun fiil (verb) plus the plural suffix -ler and the locative suffix -de, literally meaning “in verbs” or “within the verbs.” It is used to indicate a location or scope related to verbs and also appears as a common textbook heading to introduce sections about verbs.

Morphologically, fiillerde is built as fiil + ler (fiiller) + de (locative). The locative suffix -de/-da in Turkish shows location, and its form is chosen by vowel harmony; in fiiller, the last vowel before the suffix is e, so the locative appears as -de, yielding fiillerde.

In ordinary prose, fiillerde can function as a prepositional phrase meaning “in the verbs” and is often used to discuss properties of verbs in Turkish grammar. For example, “Fiillerde çekim ekleri kök değişmez” translates to “In verbs, the inflectional endings do not change the verb stem.” It is also used in instructional or descriptive headings, such as “Fiillerde çekimler” or “Fiillerde zamanlar ve kipler,” to delineate topics within a grammar text.

Etymology: fiil comes from Turkish for “verb,” itself borrowed historically from Arabic فعل (fiʿl). The plural -ler and the locative -de are productive Turkish affixes, demonstrating typical noun-based derivation and case marking patterns in Turkish morphology.

See also: fiil, fiiller, Turkish grammar, locative case, vowel harmony.