| speed-up |
an increase in speed; acceleration. [2 definitions] |
| speed up |
to go or cause to go faster. |
| speedway |
a race track for automobiles and motorcycles. [2 definitions] |
| speedwell |
any of various wild plants, bushes, or small trees that bear clusters of short-lived blue flowers. |
| speedy |
characterized by swift movement or rapidity of accomplishment. |
| speleology |
the scientific exploration, examination, and study of caves. |
| spell1 |
to name or write the letters of (a word) in order. [4 definitions] |
| spell2 |
a word, phrase, or the like used to bewitch or enchant; charm; incantation. [3 definitions] |
| spell3 |
a brief, undefined period or interval of time. [4 definitions] |
| spellbind |
to hold fascinated, as though under a spell; enchant. |
| spellbinder |
someone or something that holds attention as if by a spell, such as a compelling orator or entertainer, or a fascinating book. |
| spellbound |
held in fascinated attention, as if by a spell. |
| spell check |
a computer program that checks the spelling in a document. [2 definitions] |
| spelldown |
see "spelling bee." |
| speller |
a person who spells words. [2 definitions] |
| spelling |
the way one or more words are spelled; orthography. [2 definitions] |
| spelling bee |
a spelling competition, esp. one in which any contestant who misspells a word is eliminated. |
| spell out |
to describe or explain in detail, so as to make unmistakably clear. [2 definitions] |
| spelt1 |
a past tense and past participle of spell1. |
| spelt2 |
a hardy wheat grown in Europe and western Asia and used esp. for livestock feed. |
| spelunk |
to explore or investigate caves. |