design Antonyms

rig extemporise improvize purposelessness conditions light upon game of chance fall into copycat law of averages ad lib play it by ear go off at half-cock risk sophistry subsistence substantiality tangibility timing tradition whim happenstance plagiarise disorientation messiness do off the top of your head do something impromptu do something off the cuff do something off the top of one's head do something on the spur of the moment do something without special preparation do without preparation let things go as they may speak impromptu do off the cuff act without preparation act spontaneously rush into busk it disorganisation plunge in serendipity wing it make it up as one goes along workableness act according to the situation speak off the cuff accidentality disarrangement disarray