etna (noun) Bunsen burner: laboratory gas burner
Sinonime: callow,
credulous, fresh,
gullible,
ignorant, immature, inexpert,
ingenuous,
innocent,
naive,
new, raw, tenderfoot, unconversant, unpolished, unpracticed, unseasoned, unskillful,
unsophisticated, untrained, unversed, wet behind the ears,
young, youthful
Antonime: experienced,
expert,
skilled