intelligent
Pronunciation: /ɪnˈtɛlɪdʒ(ə)nt/
adjective
- having or showing intelligence, especially of a high level: Anna is intelligent and hard-working an intelligent guess
- (of a device or building) able to vary its state or action in response to varying situations and past experience.
- (of a computer terminal) incorporating a microprocessor and having its own processing capability. Often contrasted with dumb.

Origin:
early 16th century: from Latin intelligent- 'understanding', from the verb intelligere, variant of intellegere 'understand', from inter 'between' + legere 'choose'

Spelling help
Remember that intelligent ends with -ent.