SOLVABLE, SOLVE, SOLVED
ADJECTIVES
1623 — EXTRICABLE that may be solved or unravelled → obs.
1661 — SALVABLE of a difficulty, doubt, etc.: that can be explained or cleared up; solvable → obs.
VERBS
1450 — PUT THE AXE IN THE HELVE to solve a doubt, to find out a puzzle
1640 — CRACK to puzzle out, to make out, to solve
1800 — READ to explain, to solve → Sc.
1870 — RIDDLE to explain, to solve, to understand → Sc. & Eng. dial.
1905 — AREED to solve, to explain → Eng. dial. (Bk.)
1919 — NUT OUT to think out; to solve a problem, plan of action, etc. → Aust. sl.
1950 — HACK IT to solve a problem, to succeed → sl.
1961 — PSYCH OUT to analyze or solve a problem → colloq.
1980 — SHOOT TROUBLE to solve a problem; to repair, to mediate, to trouble-shoot → sl., orig. US
Lexicophilia 