words of one syllable, in

In simple terms, as in I don't understand financial derivatives-can you explain them in words of one syllable? [Colloquial; 1920s]

Name	Pronounced	Usage
Tinek	-	Slovene
Haim	-	Hebrew
Lanre	-	Western African, Yoruba
Alise (2)	-	English (Rare)
Kari (1)	-	Norwegian
Robertas	-	Lithuanian