screw up (v.)
- abreast
- affix
- amiss
- anchor
- annex
- attach
- back
- belay
- bitch
- blow
- bobble
- bollix
- boot
- brace
- bugger
- bum
- bungle
- cement
- cinch
- clamp
- clinch
- complicate
- confound
- confuse
- cook
- cramp
- embrangle
- engraft
- entangle
- fasten
- fix
- flub
- fluff
- fumble
- garble
- goof
- graft
- grapple
- hassle
- implicate
- involve
- jumble
- knit
- knot
- license
- mess
- moor
- muddle
- muff
- perplex
- queer
- ramify
- ravel
- reinforce
- riffle
- rigidify
- scramble
- secure
- set
- shuffle
- sink
- snafu
- snarl
- spoil
- stiffen
- strengthen
- tangle
- tense
- tighten
- trim
- tumble
- wrong