TO LAUGH

Arabic 

ضحك. (various references)

Aymara

laruña. (various references)

Blackfoot

ikkahsi'taki. (various references)

Czech

rozesmát se (begin to laugh). (various references)

German

lachen über (laugh off, to laugh at), das ist nicht zum lachen (it's nothing to laugh about bout), auslachen (laugh at, laugh down, sneer, to laugh (at)). (various references)

Hungarian

nevetve tesz, nevetve mond, nevet (to crack up, to pooh-pooh), kacag (jiggle, laugh, titter), csillog (to glint, to glisten, to glitter). (various references)

Japanese Kanji 

笑う (to smile). (various references)

Japanese Katakana 

わらう (to smile). (various references)

Pig Latin

otay aughlay.(various references)

Romanian

e ceva serios (it is nothing to laugh at). (various references)

Romansch

rir. (various references)

Romany

asàv. (various references)

Sicilian

ridiri. (various references)

Swazi

kú-hleka. (various references)