The Most ...

The most selfish one letter word ...

"I"

- Avoid it ...

The most satisfying two-letter word ...

"WE"

- Use it ...

The most poisonous three-letter word ...

"EGO"

- Kill it ...

The most used four-letter word ...

"LOVE"

- Value it ...

The most pleasing five-letter word ...

"SMILE"

- Keep it ...

The fastest spreading six-letter word ...

"RUMOUR"

- Ignore it ...

The hardest working seven-letter word ...

"SUCCESS"

- Achieve it ...

The most enviable eight-letter word ...

"JEALOUSY"

- Distance it ...

The most powerful nine-letter word ...

"KNOWLEDGE"

- Acquire it ...

The most essential ten-letter word ...

"CONFIDENCE"

- Trust it ...