How to pronounce 冇理由 in Cantonese (4 out of 5):

咁但系又冇理由
But there's no reason for that.

Cantonese Sentence Breakdown

gam3
so (Cantonese)
Mandarin equivalent: 这样zhèyàng [这样], like this
daan6
but
hai6
department
jau6
(once) again
also
both... and...
and yet
(used for emphasis) anyway
and (used in the context when talking about fractions)
in adddition
冇理由 mou5 lei5 jau4
"impossible"; "implausible"; "it cannot be"
haa4
modal particle ending sentence, showing affirmation
approval
surprise
appreciation
consent
request for an answer or confirmation