If you are not bold enough to write your guesses in straight away, either pencil them in or go check the dictionary. Sometimes, checking the dictionary is a good idea even if you have completed the crossword, because you can often pick up a nugget which sticks and which could be of benefit later. For example, URTICA appeared in the Mephisto set by Tim Moorey a couple of weeks ago, so when I came to answer 13dn this week, the answer sprung immediately to mind. Also, see my comment for 9dn, where checking the web not only confirmed that I had the correct answer, but taught me something I didn’t know as well.
ACROSS
1 – GO(SSAM)ER – The sexy little number is a GOER, covering MASS reversed.
7 – GLIA – the supporting tissue of the brain and the spinal cord.
10 MONANDROUS – MONA-N(DR)OUS – a mona is a West African monkey, and monandrous means “having one mate at a time”.
14 – BARBECUE – I got this without knowing why “barbe” = “strict teacher”. A little post-crucuverbal research turned up that a barbe is a teacher of the Waldensian Christian community, which promotes an austere lifestyle and strict adherence to the Gospels.
17 – ULULATE – I once got into trouble at school, when in my Latin class, we were asked to come up with an English word from the root “ululare” – to hoot or wail. I offered Lulu.
21 – CARINA – Car. in A(ustralia). Have never come across A being Australia before – although it could be AustraliaN as in ANZAC, so I suppose there must be an abbreviation out there somwehere that has A=Australia.
27 – LEVIGATE – The certain Strauss is Levi Strauss (1829-1902), the jeans baron, and “levigate” can be smooth (noun) or to make smooth (verb)
31 – STATISTICS – (IT’S IT’S CAST)*
32 – TAKA – clever hidden clue, the taka being a unit of currency in Bangladesh
DOWN
2 – OCEAN BASIN – AS (when) in (CABIN ONE)*
3 – SMARM – “SM” = sergeant-major
5 – MANCUS – MAN (piece, as in chess piece) followed by CU (copper) and S (shillings), an old English coin worth thirty pence
6 – ENGULF – (LUG<=) in (fen)*
9 – ASSIENTO – ASS-I(E)NTO – where “enthusiatic about”. An assiento was a treaty for the supply of African slaves, prevalent in the seventeenth and eighteenth centuries. The word comes from the Spanish for agreement, which is how I came to answer it, without knowing its full meaning.
13 – URTICATION – U-R(TIC)ATION – see preamble.
15 – PACIFIST – PACT with IF I’S included &lit.
20 – LEWISIA – A genus of North American herbs, including the bitterrrot. Wordplay is LE(WIS(e)-I)A
25 – FARSI – language in Iran. The wordplay will only work in a down clue here, because one drops (ie appears lower) in the answer, so fairs = bazaars, becomes FARSI. The “is it heard” bit of the clue led me on a wild goose chase, because I was looking for a homonym, and played wirth PURSE and purrs, before I checked in the letter A.
Six unclued solutions (two words each), are possible “18 across” (one word) in a seasonal item (two words) that can be arranged from the letters in shaded squares, and should be written out beneath the grid.