entries → 簡直
TSUMUGU · TOCFL 4 (est.) · 詞
簡直 word · TOCFL 4 (est.)
簡直 ＝ 簡 ＋ 直
ㄐㄧㄢˇ ㄓˊ · jiǎnzhí
adverb — simply; literally; just (for emphasis: 簡直瘋了 simply insane)

字源 FORM — what the parts do

簡simple (簡單的簡)jiǎn
直straight, straightforward (直接的直)zhí
簡直，簡單的簡，直接的直。
關 · Related
簡單jiǎndānsimple, plain — the same 簡