Execute (?), v. t. [imp. & p. p. Executed (?); p. pr. & vb. n. Executing (?).] [F. exécuter, L. executus, exsecutus, p. p. of exequi to follow to the end, pursue; ex out + sequi to follow. See Second, Sue to follow up, and cf. Exequy.] 1. To follow out or through to the end; to carry out into complete effect; to complete; to finish; to effect; to perform.
[1913 Webster]

Why delays
His hand to execute what his decree
Fixed on this day? Milton.
[1913 Webster]

2. To complete, as a legal instrument; to perform what is required to give validity to, as by signing and perhaps sealing and delivering; as, to execute a deed, lease, mortgage, will, etc.
[1913 Webster]

3. To give effect to; to do what is provided or required by; to perform the requirements or stipulations of; as, to execute a decree, judgment, writ, or process.
[1913 Webster]

4. To infect capital punishment on; to put to death in conformity to a legal sentence; as, to execute a traitor.
[1913 Webster]

5. To put to death illegally; to kill. [Obs.] Shak.
[1913 Webster]

6. (Mus.) To perform, as a piece of music or other feat of skill, whether on an instrument or with the voice, or in any other manner requiring physical activity; as, to execute a difficult part brilliantly; to execute a coup; to execute a double play.

Syn. -- To accomplish; effect; fulfill; achieve; consummate; finish; complete. See Accomplish.
[1913 Webster]