Across
1
En ___ (in a large group)
6
Garment that, despite its name, is often worn while doing nothing
12
Sub in for
13
"The coast is clearly visible!"
14
Base ... or a set of four sections, three of which are featured in this puzzle?
16
Rubs without needing a rubber
17
Make progress on, as a stubborn jar lid
21
Released
22
Bench for prayers
23
"As I ___ Dying"
24
"Daria" network
26
Jupiter
27
Worldly influence exercised by the papacy
33
Hydrochloric acid secreters in the stomach
34
Private exhibition?
35
Electronics brand that was once part of Sony
36
Minion___ (language with 10,400 native speakers, according to the Despicable Me Wiki)
37
AOL giveaways, once
38
English texting abbreviation equivalent to the French "jtm"
40
Roof supporter
46
Island with giant "dragons"
48
Move that starts with the arms stretched out
50
Sets of multiple earrings ... or a description of the center of this grid
52
"Thanks for bringing this to my attention" acknowledgement
53
How long-distance lovers spend most of their time
54
Shocked... SHOCKED
55
Does some restaurant work
Down
1
Figure who, according to some Muslims, will rid the world of evil and usher in the end times
2
Taiwanese computers that aren't Asuses (Asi?)
3
Helps clean up after the party, say
4
Person who has renounced worldly things
5
Suffix like -like
6
Challenge to a duel
7
Word aptly obtained by flipping the first letter of "Mars" upside-down
8
Doc who might treat sleep disorders
9
"Set Fire to the Rain" singer
10
Try to make fetch happen?
11
Just kinda average
15
School home to the TerpZone, for short
18
"I fell in love the way you fall asleep: ___, and then all at once"
19
Icicle sites
20
AOC, for one
22
Statistic that's widely misused in science
24
Like a ragtag crew
25
___ Lifeline (crisis hotline)
26
Shock to the system
27
Philosophical tradition that emphasizes the three treasures
28
Proper noun hidden in this clue
29
Tim the Beaver's university
30
Small edible sphere
31
Digital watch face
32
Prov. that's called Eilean a' Phrionnsa in Scottish Gaelic
33
Madrid museum
34
"Holy ___" (Demi Lovato album whose title replaces a U with a V)
38
Dog collar attachment
39
Reluctant
40
Elbow protector
41
Family member who didn't used to be your family member
42
Parkinson's medication
43
Poet who supposedly drowned while reaching for the moon's reflection in a river
44
"___ your eyes!"
45
Musical symbols that sometimes look like top hats
47
Department of Labor org.
48
Makes tracks, in a way
49
Broke down in tears
51
Org. that encourages people to take the L
Left-Brained