(adj) someone who is intense, fierce, tough, and/or extremely capable; from Mandarin Chinese li4 hai; slang equivalent: "knows his/her shit."
"That guy is really lihai, he climbed Mt. Everest in three days."
"This teacher's pretty lihai, her class is kicking my butt."
"This teacher's pretty lihai, her class is kicking my butt."
by Evelyn Atkinson December 13, 2008
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