Ireland are still looking for their first win at the Women's World T20 after losing to Pakistan by 38 runs in Guyana.
Pakistan, who had lost their first two matches, reached 139 for six from their 20 overs, with Javeria Khan unbeaten on 74 of 52 balls.
Teenager Lucy O'Reilly took an impressive three for 19 but Pakistan's total proved more than enough as Ireland could only manage 101 for nine.
Only Clare Shillington (27) and Isobel Joyce (30) - sister of former Ireland and England international Ed - reached double figures for Ireland, who lost heavily to Australia in their first match.
Ireland will face India on Thursday.
Elsewhere Australia notched up their third win in the tournament and 12th consecutive win overall to book a place in the semifinals. Their progress came at the expense of New Zealand, who now need other results to go their way to be in with a chance of progressing.