Guess a word from its parts

In this video

Beginnings and endings that give a word's meaning away (about one in seven of our Word Meanings answers).

1. 1un-, dis-, mis-: not, or wrongly. Disagree: be of different opinions.
2. 2-less: without. -ful: full of. Careless, powerful.
3. 3re-: again. Rebuild, return, review.
4. 4-tion, -ment, -ness: make a noun. A definition starting "the act of…" or "the state of…" points to these.