adverb

to a greater degree or in greater amounts than is necessary, normal, or desirable; inordinately.

they don’t drink excessively

inordinately,unduly,unnecessarily,unreasonably,absurdly,ridiculously,overly,to too great a degree,extra,very,extremely,exceedingly,exceptionally,unusually,impossibly,illogically,irrationally,immoderately,intemperately,too much,overmuch,without restraint,without control,without reserve,too-too