Christina screwed up her face in disgust : WRINKLE (UP), pucker, crumple, crease, furrow, contort, distort, twist, purse.
(informal) they'll screw up the whole economy : WRECK, ruin, destroy, wreak havoc on, damage, spoil, mar; dash, shatter, scotch, make a mess of, mess up; informal louse up, foul up, put the kibosh on, banjax, do for, nix, queer; Brit. informal scupper, cock up.
2192; headword