Other forms: asserts, asserted, asserting
To assert something is to say it flatly, as a fact, and then stand behind it. You assert that the figures are right — one level sentence in a quiet room, no question mark on the end of it — and from that moment you are the person who said so.
You also assert yourself, which is a different move: you speak up in the meeting instead of waiting to be asked, and people shift over to make room for you. Countries assert their independence, courts assert their authority, and you assert your rights when somebody is walking over them. The noun is assertion and the adjective is assertive, which is a compliment where aggressive is not. It belongs to writing and to careful speech, and it takes a that-clause — you assert that something is the case. You cannot assert a person, and you cannot assert a question.
1verbassertTo state firmly that something is true, especially where others may doubt it.~57%
“She asserted that the two payments had never been made.”
formal in this meaning — an editor’s judgement
2verbyourselfTo assert yourself: to act and speak with enough confidence that people take notice of you.~7%
“He had to assert himself with the builders before anything happened.”
3verbclaimTo claim a right, a power or an authority openly, so that everyone must deal with it.~36%
“The new government asserted control over the ports.”
formal in this meaning — an editor’s judgement
Shares are an estimate: a language model read 137 sentences found in the wild and placed 132 of them on a sense (5 were unclear) — a count of our sample, not a measurement of English.
a-SSERT → a red ALERT
A red alert lamp is bolted to the wall over the table. You put one hand flat on the wood and say the thing out loud. The lamp turns, the room goes red, and the water in the glass shakes.
hooks ontoalert
Latin asserō was a physical act in a Roman court: you laid your hand on a person and declared them free, or declared them yours. It is ad, to, plus serō, to join or set in a row, on an old root meaning to bind. So an assertion began as a hand placed on a shoulder — the claim made where everybody could see it, rather than argued for.
Proto-Indo-European
*ser- (bind)
Latin
assertus
English, today
assert
Built from
From Latin assertus, perfect passive participle of asserō (“declare someone free or a slave by laying hands upon him; hence free from, protect, defend; lay claim to, assert, declare”), from ad (“to”) + serō (“join, range in a row”).
Etymology from Wiktionary, CC BY-SA