Category:Morphology
Feature:Fusion of Selected Inflectional Formatives WALS
Name:Ablaut/concatenative
Languages (68):
Conlangs (65):
Þrjótrunn
Alashian
Old Adpihi
Chamanar
Sindarin
Classical Arithide
Terpish
Lajik
K'tle
Uscaniv
Ruzian
Surnichian
Zanese
Enamyn
Gnusyak [Ghnushak]
Emyt
Celdirin
Cljek Pikay
Kti
Nauspayr
Mugini
yiqa' yiywos

ablaut is used to form different aspects of verbs, and is used to form the construct state and the plural of some nouns.

Kaynuryos
Alhese
Omluuet
Okuna
Baronh
Alakulian
Ebisedian
Applelang
Northern Lorkan
Prydonian High Gallifreyan
Sathura
Attian
Alley's Language
Pastalie Hymmnos
Tizian

Consonant gradation (aspirated ↔ unaspirated) forms conjunct/possessum forms and verb TAM/subject conjugation.

Netagin
Khuzdul
Apelcheq Maulochsab
also contains grammatical tone
Kiitra
FeNeKeRe
Amqoli
Vrkhazhian
Old Balres
Caryatic
Oedilaaiffe
Doubleyew Eyepea
Derovian
Vtayn
Yeqochun
merechi
Proto-Tampoluric
Suiacuili
Naharqan
Onnasurin
Karemar
Hanolen
Kachan
Common Honey
Touijab Kikxot
Dhrahhynian
INS
Istokahi
Ilcharotic

Natlangs (3):
Arabic (Egyptian)
Berber (Middle Atlas)
Hebrew (Modern)