Definition of HST in English:

HST

Line breaks: HST

abbreviation

1(In the UK) high-speed train, a design of express passenger train with integral diesel engines at either end: the director decided to move ten HSTs to the Midland main line

Definition of HST in:

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Word of the day demoralize
Pronunciation: dɪˈmɒrəlʌɪz
verb
cause (someone) to lose confidence or hope