speller

n person who spells (usu in the way indicated by the adj) 拼字者（通常有形容词修饰）: She's a good/poor speller. 她拼字的功底很好[差].

speed trap, speed up, speed-boat, speed-indicator, speed-up, speedboat, speedily, speediness, speeding, speedometer, speedway, speedwell, speedy, speleological (also spelaeological), speleologist (also spelaeologist), speleology (also spelaeology), spell, spellbinder, spellbinding, spellbound, spelling, spelt, spelunker, spend, spend...time (in) doing, spender, spending, spendthrift, spent, sperm, sperm whale, spermaceti, spermatozoon, spermicidal, spermicide, spew, sphagnum, sphere, spherical, spherically,