Number

Foreign plural:-

singular--------------------------------------------------plural

Axis-------------------------------------------------------------Axes

Analysis-------------------------------------------------------Analyses

Agendum------------------------------------------------------Agenda

Alumnus------------------------------------------------------Alumni

Appendix-----------------------------------------------------Apendices

Bandit----------------------------------------------------------Bandits/Banditii

Basis------------------------------------------------------------Bases

Bureau--------------------------------------------------------Bureaux/Bureaus

Crisis-----------------------------------------------------------Crises

Cherub---------------------------------------------------------Cherubium/Cherubs

Criterian-------------------------------------------------------Criteria

Datum----------------------------------------------------------Data

Erratum-------------------------------------------------------Errata

Focus---------------------------------------------------------Foci

Formula------------------------------------------------------Formulae/Formulas

Genus---------------------------------------------------------Genera

Hypothesis-------------------------------------------------Hypotheses

Locus---------------------------------------------------------Luci/Locuses

Medium-------------------------------------------------------Media

Memorandum---------------------------------------------Memoranda

Phenomenon----------------------------------------------Phenomena

Parenthesis-----------------------------------------------Parentheses

Oasis------------------------------------------------------------Oases

Referendum-------------------------------------------------Referenda

Radius--------------------------------------------------------Radii/Radiuses

Seraph--------------------------------------------------------Seraphim

Syllabus------------------------------------------------------Syllabi/Syllabuses

Thesis---------------------------------------------------------Theses

Terminus---------------------------------------------------Termini/Terminuses

Vertex-------------------------------------------------------Vertices