I don't personally have a glottal stop in "look cool". I think it's the same as "lukecool" except for one vowel, at least in my English: * lukecool /luk kul/

I don't personally have a glottal stop in "look cool". I think it's the same as "lukecool" except for one vowel, at least in my English: * lukecool /luk kul/ * look cool /lʊk kul/