Answer: Insupportable, supportable, portable, table.
The following words, among many others, are suitable for "Decapitation":—
Abate (bate, ate); abundance (bun, dance); abroad (broad, road); bail (ail, il, French for he); bland (land, and); clout (lout, out); discomfort (comfort, fort); draft (raft, aft); drear (rear, ear); drill (rill, ill); drink (rink, ink); dwell (well, ell); encompass (compass, pass); invalid (valid, lid); chair (hair, air); seat (eat, at); shire (hire, ire); slate (late, ate); and so forth.
CURTAILMENTS AND RETAILINGS.
Here we find an enlargement and modification of the "Decapitation" series of puzzles, obtained by varying the endings as well as the beginnings of words, or by varying the endings only. From the examples given it will be seen that it is legitimate to make these variations in different ways. The first examples involve the removal of final letters only to make words of different significance.
Complete, I am a privilege exclusive,
By many sought with hope illusive;
Curtail me, and for sacred use I'm claimed;
Once more, and your own head you've named;