ecesisEnglishMerriam-Webster Dictionaryazard, hit-or-miss, incidental, randomaimless, desultory, purposelessabrupt, impetuous, suddencoerced, forced, involuntarycompulsory, mandatory, necessary, nonelective, obligatory, ordered, requiredcasualextemporaneous, impromptu, impulsive, instinctive, spontaneous, unforced, unpremeazard, hit-or-miss, incidental, randomaimless, desultory, purposelessabrupt, impetuous, suddencoerced, forced, involuntarycompulsory, mandatory, necessary, nonelective, obligatory, ordered, requiredcasualextemporaneous, impromptu, impulsive, instinctive, spontaneous, unforced, unpreme