Word Study
humdinger
OXFORD DICTIONARY
humdinger, n. sl. an excellent or remarkable person or thing.
Etymology
20th c.: orig. unkn.
THESAURUS
humdinger
ace, beaut, corker, crackerjack, daisy, dandy, darb, dilly, dream, honey, killer-diller, knockout, lollapaloosa, lulu, nifty, peach, pip, pippin, sweetheart, the nuts, whizFor further exploring for "humdinger" in Webster Dictionary Online