What does that mean?

Quite difficult looking words….aren’t they? Let’s start with ‘Ambi’ , which is common between the two words – Ambi is not a word but a root which means ‘both’ or ‘both sides’ . ‘Ambidextrous’ is someone who is skillful in using both the right and left hand equally well. Similarly, ‘Ambisinister’ is someone who is clumsy or unskillful with both the hands.

Think the title makes it clear that Cachinnate means to laugh loudly, immodestly or continuously.  But by the looks of it – the word Laugh and Cachinnate look so distant in meaning. There's nothing that connects the two words. Pronounced as /Kæ-Ki-neit/ The sound æ is pronounced like the " a " in a pple.