strictly
adv/ˈstɹɪktli/
Etymology From strict + -ly.
1
In a strict manner.
- He adhered strictly to the diet his doctor prescribed.
- “If any pupil considers it acceptable to bring a pet into this school, let me tell you it is forbidden. Strictly forbidden!” pronounced the headmaster from the front of the class.2012, David Walliams [pseudonym; David Edward Williams], Ratburger, London: HarperCollins Children’s Books, →ISBN:
2
In a limited manner; only
- This work was strictly voluntary, but any animal who absented himself from it would have his rations reduced by half.1943 November – 1944 February (date written; published 1945 August 17), George Orwell [pseudonym; Eric Arthur Blair], Animal Farm […], London: Secker & Warburg, published May 1962, →OCLC:
3
In a narrow or limited sense.
- That term refers strictly to smaller birds.
- Scientific naming conventions are such that technically, ammonites are ammonoidean, ammonitidan, and sometimes strictly ammonitinan cephalopods.2017 June 14, Mark Carnall, “The ancient mystery of St Hilda's 'snake stones': what do ammonites really look like?”, in The Guardian:
4
Mathematics, Sciences In a manner that applies to every member of a set or every interval of a function