In Ulster we say "stiúcthaí".
Basically I don't know if we should write "stiúgthaí" or "stiúcthaí"... Normally, the verbal adjectives that end with -th(a)í in Ulster are those whose root ends with a voiceless consonant. So since we say /s't'u:ki:/ it must be a -c, so stiúcthaí... I don't remember if you hear a g or a c in the verb "stiúg/c" in other forms... (you can find both in Tobar na Gaedhilge)

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