Found 2 items, similar to dumbfounding.
English → English (WordNet) Definition: dumbfounding dumbfounding adj : bewildering or striking dumb with wonder [syn: astounding, dumfounding]
English → English (gcide) Definition: dumbfounding dumbfounding \dumbfounding\ adj. causing astonishment. [Narrower terms: incredible (vs. credible), unbelievable ] Syn: astonishing, astounding, dumfounding. [WordNet 1.5]