erratic

adj 1: liable to sudden unpredictable change; "erratic behavior";

"fickle weather"; "mercurial twists of temperament";

"a quicksilver character, cool and willful at one

moment, utterly fragile the next" [syn: {fickle}, {mercurial},

{quicksilver(a)}]

2: having no fixed course; "an erratic comet"; "his life

followed a wandering course"; "a planetary vagabond" [syn:

{planetary}, {wandering}]

3: likely to perform unpredictably; "erratic winds are the bane

of a sailor"; "a temperamental motor; sometimes it would

start and sometimes it wouldn't"; "that beautiful but

temperamental instrument the flute"- Osbert Lancaster

[syn: {temperamental}]