Englishfor English speakers
erratic
—
adjective
(= fickle, mercurial, quicksilver)
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
—
adjective
(= planetary, wandering)
having no fixed course
an erratic comet
his life followed a wandering course
a planetary vagabond
—
adjective
(= temperamental)
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
block
Noun
—
A block is a hard piece of material, usually with six smooth sides.
When I was young, I liked building things with wooden blocks.
—
A city block is the distance from one road to the next.
We have to walk about three blocks to the restaurant.
—
In computers, a block is a restriction that prevents access to something.
I could not start a page on Wikipedia because of a block.
block
Verb
—
If mathX/math is blocking mathY/math, then mathY/math can't go past mathX/math.
The water in the bath won't go down. There's something blocking the drain.
The road was blocked by police.
Excuse me! You're blocking my view. I can't see.