GR translation: This smile asks from him more grace than...

[Mike Jing]

P256.11-17   “Glad to hear it.” Slothrop is smiling. You’re on my list too,
pal. This smile asks from him more grace than anything in his languid
American life ever has, up till now. Grace he always imagined himself short
on. But it’s working. He’s surprised, and so grateful that he almost starts
crying then. The best part of all is not that Bounce appears fooled by the
smile, but that Slothrop knows now that it will work for him again. . . .

I find the word "grace" a little difficult to translate.  what is the
primary meaning here?
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