to make mistakes; do or be wrong

make a mistake; do wrong

to make wild and usually useless efforts (as when one is in deep water and unable to swim)

struggle; be in the dark

to calculate (amounts etc) wrongly

make a mistake

of mistake

mix up, misunderstand

to have a view of (something) from above; to fail to notice (something); pay no attention to (it)

disregard, neglect