complicate (v.)
- accelerate
- add
- adjoin
- affix
- agglutinate
- aggravate
- annex
- append
- attach
- burden
- concentrate
- condense
- confound
- confuse
- conjoin
- consolidate
- decorate
- deepen
- derange
- disarrange
- disorder
- double
- embrangle
- encumber
- enhance
- entangle
- exacerbate
- exaggerate
- garble
- heighten
- implicate
- infix
- intensify
- involve
- jumble
- knot
- magnify
- muck
- muddle
- mystify
- obfuscate
- obscure
- ornament
- perplex
- plus
- prefix
- ramify
- ravel
- redouble
- reinforce
- scramble
- shadow
- sharpen
- snafu
- snarl
- strengthen
- subjoin
- suffix
- superpose
- tag
- tangle
- triple
- upset
- whet