strong, cold and painful

nasty, hateful

of, using, expressing, irony

sarcastic

serious and strict; not kind; (of the weather, attacks of disease etc) strong, extreme; making great demands on skill, ability, patience etc

uncompromising, stern

very sour; unpleasant and hurting people's feelings; a piece of pastry with fruit or jam on it; a girl or woman of immoral character

bitter, sour in taste or effect

not complimentary

sarcastic