toshiver means to break in pieces. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why this word is great
TOSHIVER — [Verb] To break something into pieces, thoroughly and with finality. From the Middle English toshiveren, toschiveren, equivalent to the intensive prefix to- + shiver (meaning to break into fragments). Unlike “shatter” (which suggests a violent, crystalline dispersal) or “fragment” (which describes a resultant state), toshiver is the deliberate, consummative act of reduction. It is the percussive work of a mallet on a slab of sea-ice, the relentless freeze-thaw cycle that pries a boulder apart grain by grain, or the patient crumbling of a dry leaf between thumb and forefinger—a word for the quiet, cumulative force that insists everything must, in time, come apart.