im·pos·si·ble 
(ĭm-pŏsə-bəl)
(ĭm-pŏsə-bəl)adj.
1. Incapable of having existence or of occurring.
2. Not capable of being accomplished: an impossible goal.
3. Unacceptable; intolerable: impossible behavior.
4. Extremely difficult to deal with or tolerate: an impossible child; an impossible situation.
[Middle English, from Old French, from Latin impossibilis : in-, not; see IN-1 + possibilis, possible; see POSSIBLE.]
im·possi·bly adv.
- Indo-European root: reg-
- Indo-European root: rei-
- Indo-European root: reidh-
- Indo-European root: reig-
- Indo-European root: rep-
- Indo-European root: ret-
- Indo-European root: reudh-
- Indo-European root: reug-
- Indo-European root: reup-
- Indo-European root: reuə-
- Indo-European root: rē-
- Indo-European root: rēd-
- Indo-European root: r̥tko-
- Indo-European root: sak-
- Indo-European root: sal-
- Indo-European root: sed-
- Indo-European root: segh-
- Indo-European root: sek-
- Indo-European root: sekw-
- Indo-European root: sekw-
- Indo-European root: sekw-
- Indo-European root: sel-
- Indo-European root: sem-
- Indo-European root: sem-
- Indo-European root: sen-