df['variable'].replace(d, inplace=True, regex=True)

d_und = dict(zip(['u.','/',',','undd'], ['und']*5))
d_uhr = dict(zip(['Uhr','UHR','h$'], ['']*3))
d_sonstige = dict(zip(['s+','bis','BIS','_','\n',';','.-',':-','::'], ['','-','-','-','',':','-','-',':']))
d = {**d_und,**d_uhr,**d_sonstige}