10-Letter Words Starting: SPE

• become more focused on an area of activity or field of study

• be specific about

• suit to a special purpose

• devote oneself to a special area of work

• evolve so as to lead to a new species or develop in a way most suited to the environment

• specify as a condition or requirement in a contract or agreement; make an express demand or provision in an agreement

• decide upon or fix definitely

• determine the essential quality of

• be specific about

• define clearly

• design or destine

• select something or someone for a specific purpose

• temporarily incapable of speaking

• an asset of special worth or utility

• a distinguishing trait

• the special line of work you have adopted as your career

• wearing, or having the face adorned with, eyeglasses or an eyeglass

• a contraceptive agent that kills spermatozoa

• in a specious manner

• explore natural caves

• someone who draws up specifications giving details (as for obtaining a patent)