tip of the iceberg

iceberg

(literally) a point / (literally) one horn / a narwhal

to pass by, to pass through; to go beyond / to elapse; to exceed / (auxiliary) too, too much (verb)

past, after / too, too much / in/to excess, overdoing something

over-, too much / after, past

merely; no more than

negative of 過ぎる (sugiru) [ichidan]

not excessive; not too much / not beyond; not over

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter