The script uses (joyful/triumphant; wrapping/ripping; loathe/despise/hate) to mimic the Dr. Seuss cadence while allowing Carrey’s physicality to breathe. The parentheticals in the script were famously minimal—leaving room for the actor’s improvisation, but the structure of the insults was pure screenwriting craft.
"Maybe Christmas... perhaps... means a little bit more."
(The Grinch is watching the Whos from a distance, feeling guilty and curious)