1 to guess

1 to guess

2 to conjecture

3 to suppose

4 to suspect

1 to guess

2 to conjecture

3 to surmise

1 blind

2 groundlessly

3 foolishly

4 to no purpose

1 to try to answer a question (in a quiz, guessing game, riddle etc)

2 quiz game

1 to be deaf and blind (idiom)

1 to lie through one's teeth (idiom)

2 to talk drivel

1 to lie through one's teeth (idiom)

2 to talk drivel

1 blind people touch an elephant (idiom, from Nirvana sutra 大般涅槃經|大般涅盘经[dà bān Niè pán jīng]); fig. unable to see the big picture

2 to mistake the part for the whole

3 unable to see the wood for the trees

1 a blind cat finds a dead mouse (idiom)

2 blind luck