The term 'very, very tiny' can be expressed in two words: 'EENSY' and 'ATOMIC'. 'EENSY' is a 5-letter word meaning extremely small or tiny. It is derived from the word 'teensy', which is an informal way of saying 'very small'. 'ATOMIC' is a 6-letter word meaning extremely small or minute. It is derived from the word 'ATOM', which is the smallest particle of matter that can exist. Both words are used to describe something that is extremely small or minute.