Sunday Telegraph Cryptic 2629

[tabbycat09]

Please can anyone help
23 across Arist'smedium or moderate ability, initially
7 letters T_ _ _ _ _ A
also 19 down A thousand, in a sense, running amok in a group
two words 2 and 5 T_ _ _ S_ _
also 27 across Excel as risk taker 6 letters _ _ _ _ _ R

15 down Batting on English cricket side, an opener for Test lacking style

9 letters I_O_ _ _A _ _

also 17 across Repeat, having compaint about lack of education
14 letters _ L _ I _ E _ A _ _ _ _ _ S

thanks in anticipation

[Zhukov]

tempera

[ubasses]

tempera

[shooty]

27 better

[dannyk13]

23a Tempera
19d En masse
27a Better
15d Inelegant
17a Illiterateness

[bookbinder]

27a better

[Lie-in King]

23a Tempera - 'emper' (moderate) + a(bility)
19d En masse - M (thousand, in) anag 'a sense'
27a Better - double meaning
15d Inelegant - 'in' (batting) + E(nglish) + 'leg' (side) + 'an' + T(est)
17a Illiterateness - 'illness' (about) 'iterate' (repeat)