Past Tense of “relay”
The past tense of relay is relayed; the past participle is relayed.
Why “relay” behaves this way
"Relay" is genuinely regular in its dominant modern sense of passing along information or a signal ("she relayed the message"), borrowed from French "relais" (a relay of fresh hunting dogs or horses) via the sporting and postal-relay systems of earlier centuries, and it has always taken the regular "-ed" ending in that sense — there is no irregular "relew" or similar form. This makes "relay" an outlier on a page otherwise dominated by irregular verbs; it's included here specifically because it's so often mistaken for one, given its resemblance to "lay." Emergency-services dispatch protocols formally define how information must be relayed between callers, dispatchers, and responding units, treating accurate relaying as a critical, trainable skill with real safety consequences.
The confusion arises because "relay" looks like it could be built from "re-" plus "lay" (the transitive verb meaning to place something down), which would suggest an irregular past "relaid" by analogy with "overlay/overlaid." In fact, in the narrow specific sense of laying something down again — relaying a carpet, relaying bricks, relaying a floor — English does use the irregular "relaid," genuinely built from "re-" plus "lay." So "relay" is actually two different words sharing one spelling: the regular communication verb (relayed) and the irregular construction verb (relaid), and writers need context to tell which is meant. Telecommunications history used "relay" as a core technical term long before radio or television, describing physical relay stations along telegraph lines that boosted and passed along a signal too weak to travel the full distance alone.
The common confusion
The real confusion is choosing between "relayed" (for passing along information, a signal, or a baton) and "relaid" (for physically laying something down again, like flooring or track) — these are two etymologically distinct words that happen to share the spelling "relay," and picking the wrong past form for the intended meaning is a genuine, specific error worth watching for.
How it's actually used
"Relayed" dominates in communication, journalism, and sports contexts (relaying a message, relaying a baton, a radio signal being relayed), while "relaid" appears specifically in construction and flooring contexts (the carpet was relaid, the track was relaid), and the two should never be swapped. Track-and-field relay races borrow the word directly for their event name, with runners relaying a baton, tying the sport's terminology directly back to the verb's oldest sense of passing something from one carrier to the next. Space missions rely on relay satellites to pass communication signals between distant probes and mission control on Earth, an application of the same core "pass along" meaning at an entirely different scale.
Across the tense system
"Relayed" works as both simple past and past participle for the communication sense ("has relayed," "was relayed"), while "relaid" works the same way for the construction sense ("has relaid," "was relaid") — each sticks to its own consistent form. News agencies frequently describe relaying breaking information to affiliate stations using the present progressive ("is relaying updates") during a live, unfolding story, shifting only afterward to the past tense in a wrap-up report.
Common real mistakes
The most likely error is writing "relaid" when the communication sense is intended ("she relaid the message" is incorrect; it should be "relayed"), or the reverse, writing "relayed" for the flooring sense ("the carpet was relayed" should be "relaid"). Choosing the wrong one is a genuine meaning-changing mistake, not just a stylistic slip. A further point: sports broadcasters occasionally use "relayed" loosely for describing a runner passing a baton, even though the specific construction sense ("relaid") never applies to that athletic context.
Examples
- The dispatcher relayed the emergency call to the nearest unit.
- Workers relaid the entire hardwood floor after the leak.
- She relayed her boss's instructions to the rest of the team.
- The track had to be relaid after decades of wear.
- The final runner relayed the baton just in time to hold the team's lead.
- The coach relayed the final play call through hand signals from the sideline.
- The orbiter relayed the rover's data back to mission control every few hours.
Memory trick
Ask what's being repeated: a message or signal takes "relayed" (regular, like "played"); physically putting something down again — carpet, brick, track — takes "relaid," borrowing straight from "lay/laid."