紧密

紧密	jǐn mì	inseparably close
紧	jǐn	tight / strict / close at hand / near / urgent / tense / hard up / short of money / to tighten
密	Mì	surname Mi / name of an ancient state
密	mì	dense; close; thick / intimate; close / (bound form) secret; confidential / (Internet slang) to send a private message to (sb); to DM