1. complexify, ramify, change

usage: have or develop complicating consequences; "These actions will ramify"

2. ramify, branch, grow

usage: grow and send out branches or branch-like structures; "these plants ramify early and get to be very large"

3. branch, ramify, fork, furcate, separate, diverge

usage: divide into two or more branches so as to form a fork; "The road forks"

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See also: ramify (Dictionary)