增厚的
增稠的

Thicken \Thick"en\, v. t. [imp. & p. p. {Thickened}; p. pr. &
vb. n. {Thickening}.]
To make thick (in any sense of the word). Specifically:
(a) To render dense; to inspissate; as, to thicken paint.
(b) To make close; to fill up interstices in; as, to thicken
cloth; to thicken ranks of trees or men.
(c) To strengthen; to confirm. [Obs.]

And this may to thicken other proofs. --Shak.
(d) To make more frequent; as, to thicken blows.