launch

Synonyms: barrage bombard bung cast catapult discharge dispatch drive eject fire fling heave hurl lance pitch project propel send forth set afloat set in motion shoot sling throw toss

Antonyms: hold keep

Synonyms: bow break the ice break the seal commence embark upon get show on road inaugurate instigate institute introduce jump kick off open originate set going start start ball rolling usher in

Antonyms: cease end finish stop