Here we go..
Tá tuirse orm /Thaw thir-sheh ur-um/.
A literal translation is ‘there is tiredness on me’. In Irish we often say that feelings, ailments and other transient states are on us.
Here orm /ur-um/ is the first person-singular prepositional pronoun of the preposition ar /air/, meaning ‘on’ in English.
Tá /thaw/ is the verb bí /be/ (‘to be’ in English) in the present tense, so it can mean ‘is’, am’ or ‘are’ depending on the personal pronoun that follows it.
The noun tuirse (fem.) /thur-sheh/ means tiredness or weariness.
We can use this simple sentence structure tá + noun + prepositional pronoun to express many other feelings.
You might say..
‘I’m happy’: tá áthas orm /thaw aw-huss ur-um/
or..
‘I’m hungry: tá ocras orm /thaw uh-crus ur-um/
or even use it to talk about external physical features.
For instance, to say ‘I have curly hair’ you would say tá gruaig chatach orm /thaw groo-ah-igg khaw-tukh ur-um/.
Another common way to say that you are tired is tá mé tuirseach /thaw may thur-shokh/.
This translates directly as ‘I am tired’. Here tuirseach /thur-shokh/ is an adjective that means tired or weary.
If you are exhausted you’ll need to say tá mé traochta /thaw may tray-ukh-tha/ (‘I am exhausted’).
Traochta is the is the verbal adjective of the verb traoch, meaning to exhaust, wear out or subdue.
I hope that you enjoyed today’s little lesson.
I’m off for a nap (or as we say in Irish, néal codlata /nayl cud-la-thuh/)!
‘Z‘ is a letter in the Irish alphabet that is seldom used, but here it goes. Zzzzzzzzzzzzzzzzzzzzzzzzzzz…

Your pronunciation of “ ocras” was nothing like i was taught in school growing up in Dublin Ireland. It is pronounced pretty much as it is written, with a hard c and, because there is no fada , the o would have a “uh” sound.
Haigh, a chara
Ben is a native speaker of Chorca Dhuibhne Irish.
Le beannacht
Emma
https://www.teanglann.ie/en/fuaim/ocras
Okay, but why does it list the pronunciation of ocras as being the same as the pronunciation of áthas? It looks like a copy-paste error. Ocras is always pronounced uh-crus. Not aw-huss like áthas.
Haigh Oisín, well spotted. That’s fixed now, and the post also now features a good few helpful recordings.