1. Synonyms for Bumptiously include arrogantly, cockily, presumptuously, swaggeringly, conceitedly, egotistically, forwardly, opinionatedly, overbearingly and pushily

2. Antonyms for Backwardly include forwardly, extrovertedly, immodestly, outgoingly, brashly, willingly, eagerly, pushily, gregariously and socially