controlled
UK[kənˈtrəʊld]US[kənˈtroʊld]
adj
Carefully restrained or regulated; not impulsive or extreme.
adj
(of a drug) restricted by law so that it can only be obtained with a doctor's prescription.
adj
(of an experiment, test, or study) conducted with a control for comparison.
Morpheme Breakdown
control
led
control
to keep a copy of a roll of accounts, to verify,
led
Etymology
The word 'controlled' is built upon the verb 'control', which entered English in the late 15th century from the Anglo-French 'contreroller', a term from accounting meaning "to verify by a duplicate register." This, in turn, derives from the Medieval Latin 'contrarotulare', literally "to check by a counter-roll" (from 'contra-' meaning "against" + 'rotulus' meaning "roll, little wheel"). The core concept is one of verification, restraint, and authority through comparison. The suffix '-ed', of Germanic origin, is added to form the past participle, which functions as an adjective describing something that has been subjected to this process of restraint, regulation, or verification. Thus, the modern sense of being "restrained" or "scientifically compared" flows directly from the original logic of checking against a standard.
Analysis
Structure: control + led
- control: From Anglo-French 'contreroller', meaning "to keep a copy of a roll of accounts, to verify," from Latin 'contrarotulare'. The functional role is the core verb/action.
- led: The past tense and past participle suffix '-ed', from Old English '-ede', '-ode', '-ad', indicating a completed action or state. Its functional role is to form the adjective from the verb.
Examples
She spoke in a calm, controlled voice despite her anger.
Morphine is a strictly controlled substance.
The study was a controlled trial with a placebo group.