glo bur

1) suddenly [& unforseen]; 2) not part of the ongoing nature, incidental, adventitious; 3) newly arisen, never having been seen before; 4) temporary, fleeting, passing, momentary, transient; 5) abrupt; 6) immediate, instantaneous[ly] [IW]

accidental, incidental, adventitious, fortuitous, suddenly, random, mere surface, merely superficial, immediately, momentary, sudden [JV]

glo bur ba adventitious; superficial; incidental [RB]

adventitious [ggd] [RY]

1) temporary, fleeting, passing, momentary, incidental, transient, superficial, adventitious. 2) sudden, abrupt, immediate, suddenly, instantaneously; adventitious, accidental [RY]

temporary, accidental, incidental, adventitious, fortuitous, suddenly, random, mere surface, merely superficial, immediately, momentary, sudden [JV]