intent (n.) Look up intent at Dictionary.com
"purpose," early 13c., from O.Fr. entente, from L.L. intentus "attention," from L. intentus (fem. intentia), pp. of intendere "stretch out, lean toward, strain," lit. "stretched out" (see intend). Intentionally "on purpose" is from 1660s.
intent (adj.) Look up intent at Dictionary.com
"very attentive," 1606, from L. intentus "attentive, eager, strained," pp. of intendere "to strain, stretch" (see intend).