+50 Irregular Plural Nouns List

+50 Irregular Plural and Singular Nouns List

SingularPlural
AddendumAddenda
AircraftAircraft
AlumnaAlumnae
AlumnusAlumni
AnalysisAnalyses
AntennaAntennae
AntithesisAntitheses
ApexApices
AppendixAppendices
AxisAxes
BacillusBacilli
BacteriumBacteria
BasisBases
BisonBison
BureauBureaux
SingularPlural
CactusCacti
ChildChildren
CodexCodices
ConcertoConcerti
CorpusCorpora
CrisisCrises
CriterionCriteria
CurriculumCurricula
DatumData
DeerDeer
DiagnosisDiagnoses
EllipsisEllipses
ErratumErrata
FocusFoci
FootFeet
SingularPlural
FungusFungi
GenusGenera
GooseGeese
GraffitoGraffiti
GrouseGrouse
IndexIndices
LarvaLarvae
LibrettoLibretti
LocusLoci
LouseLice
ManMen
MediumMedia
MouseMice
NebulaNebulae
NucleusNuclei
SingularPlural
OasisOases
OvumOva
OxOxen
PhylumPhyla
PrognosisPrognoses
QuizQuizzes
SeriesSeries
SheepSheep
SpeciesSpecies
StimulusStimuli
StratumStrata
SwineSwine
SyllabusSyllabi
SynopsisSynopses
ThesisTheses