Fill in the blanks

I did see the hint, which your suggestion made memorable. I doubt I'll be able to claim the benefit of not knowing the word, so it's just annoying to me that I can't think of it.

Even if you've never heard or seen it before, you can guess it. It's not a very common word, but it's regularly formed. Just take "boiling" and add a syllable.

Voice of the THIRD SPIRIT
In the blue depth of the waters,
Where the wave hath no strife,
Where the wind is a stranger,
And the sea-snake hath life,
Where the Mermaid is decking 
Her green hair with shells;
Like the storm on the surface
Came the sound of thy spells;
O'er my calm Hall of Coral
The deep echo roll'd--
To the Spirit of Ocean
Thy wishes unfold!

FOURTH SPIRIT
Where the slumbering earthquake
Lies pillow'd on fire, 
And the lakes of bitumen 
Rise boilingly higher;
Where the roots of the Andes
Strike deep in the earth,
As their summits to heaven
Shoot soaringly forth;
I have quitted my birth-place,
Thy bidding to bide--
Thy spell hath subdued me,
Thy will be my guide!

FIFTH SPIRIT
I am the Rider of the wind, 
The Stirrer of the storm;
The hurricane I left behind
Is yet with lightning warm;
To speed to thee, o'er shore and sea
I swept upon the blast:
The fleet I met sailed well, and yet
'Twill sink ere night be past.

And so on, with clapping of joyful hands till all the group had begged for ____ but Tom and Amy. Then Tom turned coolly away, still talking, and took Amy with him. Becky's lips trembled and the tears came to her eyes; she ____ these ____ with a forced gayety and went on chattering, but the life had gone out of the pic-nic, now, and out of everything else; she got away as soon as she could and hid herself and had what her sex call "a good ____." Then she sat moody, with wounded pride till the bell rang. She roused up, now, with a ____ cast in her eye, and gave her plaited tails a shake and said she knew what she'd do.

At recess Tom continued his ____ with Amy with jubilant self-satisfaction. And he kept drifting about to find Becky and lacerate her with the ____. At last he spied her, but there was a sudden falling of his ____. She was sitting cosily on a little bench behind the school-house looking at a picture book with Alfred Temple—and so absorbed were they, and their heads so close together over the book that they did not seem to be conscious of anything in the world besides. Jealousy ran red hot through Tom's veins. He began to hate himself for throwing away the chance Becky had offered for a ____. He called himself a fool, and all the hard names he could think of. He wanted to cry with vexation. Amy chatted happily along, as they walked, for her ____ was ____, but Tom's tongue had lost its ____. He did not hear what Amy was saying, and whenever she paused expectantly he could only stammer an awkward assent, which was as often misplaced as ____. He kept drifting to the rear of the school-house, again and again, to sear his eye-balls with the hateful spectacle there. He could not help it. And it maddened him to see, as he thought he saw, that Becky Thatcher never once suspected that he was even in the ____ of the ____. But she did see, nevertheless; and she knew she was winning her fight, too, and was glad to see him suffer as she had suffered.

I added a couple of guesses.