lagged

The core verb 'lag' likely entered English in the 16th century from Scandinavian languages, such as the Norwegian 'lagga', meaning to go slowly or last. This itself may be related to a Middle English word for 'last', pointing to an idea of being at the rear. The addition of the common Germanic past-tense suffix '-ed' creates the form 'lagged', which strictly denotes the action of having fallen behind. The computing sense of delayed response is a modern metaphorical extension of this core idea of slowness relative to a desired or expected pace.

Structure: lag (to fall behind) + ged (past tense/participle suffix) - lag: Origin likely from a Scandinavian source (e.g., Norwegian lagga 'to go slowly'). Its functional role is the core verb root meaning to fall behind. - ged: This is not an independent morpheme but represents the inflectional suffix '-ed', indicating the past tense or past participle form. Its origin is from Old English '-ede', '-ode', '-ade'.