innocuous

in(not)+nocuous(noxious)........ means not noxious......something which is not noxious is harmless...

innocuous ~ innocent

Although some spiders are POISONOUS, most of them are INNOCUOUS (harmless)

Nokia+Us- Amongst 'fell' phones, Nokia is the most harmless to Us.

He is locked IN the box and he KNOCKS TO US, but we ignore him because he is now harmless.

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INjury NO COw tO US ...no injury is given to us by cow

in + no + c + u + ous >>> means u do not have an eye on us.. so u r not harmful to us..

"Innocuous" is closely related, in both origin and meaning, to "innocent"

Innocuous: ENO (antacid) quon US mein nahi lete log, ye to completely HARMLESS hai.

Innocuous= I NO KILL US :-)

In-Noc(sounds like Knock "knock the door" to come inside) If someone knocks to come inside then he is harmless. Harmful people just barged in.