Similar words: obligate, obligation, alligator, investigator, derogatory, oblige, obliged, obliging. Meaning: [ə'blɪgətɔrɪ /-trɪ] 
adj. 1. morally or legally constraining or binding 2. required by obligation or compulsion or convention.
adj. 1. morally or legally constraining or binding 2. required by obligation or compulsion or convention. 
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1, When an end is lawful and obligatory, the indispensable means to is are also lawful and obligatory. 
2, The college authorities have now made these classes obligatory.
3, Attendance at school is obligatory.
4, It is obligatory for companies to provide details of their industrial processes.
5, The teacher asked his students to labour at obligatory courses.
6, She was wearing the obligatory sweater and pearl necklace.
7, It is obligatory to remove your shoes before entering.
8, The medical examination before you start work is obligatory.
9, It is obligatory for vets to be registered.
10, She offered him the obligatory cup of tea.
11, Attendance at tonight's meeting is obligatory.
12, There was all the usual humbug and obligatory compliments from ministers.
13, It is obligatory on every citizen to safeguard our great motherland.
14, These rates do not include the charge for obligatory medical consultations.
15, In the mid 60s he took the almost obligatory trip to India.
16, Evening dress is usual, but not obligatory.
17, Voting is obligatory for Brazilians aged 18 to 69.
18, Identification with one's community is, though not morally obligatory, a desirable state, at least if that community is reasonably just.
19, It will become obligatory for members in practice to hold adequate professional indemnity insurance.
20, By the time I had done the obligatory 20-minute brushwork on Vaquero,[http://sentencedict.com/obligatory.html] my arms ached.
21, It is now obligatory for all competitors to wear face protectors.
22, This change applied to the obligatory foreign exchange intervention, i.e. when exchange rates moved to their limit.
23, Most women will be offered an ultrasound scan during pregnancy, although it's not obligatory.
24, Some secret service agents turned up, all wearing the obligatory raincoat and hat.
25, Our morning had been devoted to running errands and visiting the obligatory temples.
26, The hotel itself has a terrace with comfy chairs for that obligatory cocktail.
27, For their part the priests declared that without such obligatory gifts they would not be able to survive.
28, Appreciation of this reality begins with the popular, indeed obligatory, definition of work.
29, On Oct. 27 the central committee proposed that multi-candidate elections with secret ballots be obligatory.
30, In a number of countries for some years, the wearing of crash helmets by motor cyclists has been obligatory.
More similar words: obligate, obligation, alligator, investigator, derogatory, oblige, obliged, obliging, profligate, gator, oratory, dilatory, minatory, mandatory, aleatory, crematory, laudatory, predatory, placatory, gustatory, migratory, regulatory, reformatory, defamatory, ambulatory, laboratory, preparatory, declamatory, consolatory, observatory.